Document:

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                                                                    EXHIBIT 10.2

                     SIXTH AMENDMENT TO EMPLOYMENT AGREEMENT

          THIS SIXTH AMENDMENT, made as of the 1st day of March, 2000, by and
between MECHANICAL DYNAMICS, INC., a Michigan corporation (the "Company"),
having offices located at 2301 Commonwealth Blvd., Ann Arbor, Michigan 48105,
and ROBERT R. RYAN, of Brighton, Michigan ("Employee"), for the purpose of
amending that certain Employment Agreement between the Company and Employee
dated as of April 1, 1994, and amended by agreements dated as of March 1, 1995,
as of March 1, 1996, as of March 1, 1997, as of March 1, 1998, and as of March
1, 1999 (collectively, the "Employment Agreement").

          WITNESSETH:

          WHEREAS, the Company and Employee desire to extend the Employment
Agreement for an additional one-year period.

          NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants contained herein and in the Employment Agreement, the parties hereto
agree as follows:

          A. Section 2 of the Employment Agreement is hereby amended to extend
the term of said Agreement through March 31, 2002.

          B. Except as expressly modified herein, the Employment Agreement shall
remain in full force and effect in accordance with its terms.

          IN WITNESS WHEREOF, the parties hereto have duly executed this Sixth
Amendment as of the day and year first above written.

WITNESS:                                                COMPANY

                                                 MECHANICAL DYNAMICS, INC.

/s/ Linda K. Moore                              By: /s/ Michael E. Korybalski
-------------------------------               ----------------------------------
                                                    Michael E. Korybalski,
                                                    Chief Executive Officer

                                                           EMPLOYEE

/s/ Linda K. Moore                                  /s/ Robert R. Ryan
-------------------------------               ----------------------------------
                                                    Robert R. Ryan<PAGE>   1
                                                                    EXHIBIT 10.3

                     THIRD AMENDMENT TO EMPLOYMENT AGREEMENT

          THIS THIRD AMENDMENT, made as of the 1st day of March, 2000, by and
between MECHANICAL DYNAMICS, INC., a Michigan corporation (the "Company"),
having offices located at 2301 Commonwealth Blvd., Ann Arbor, Michigan 48105,
and DAVID PERALTA, of Livonia, Michigan ("Employee"), for the purpose of
amending that certain Employment Agreement between the Company and Employee
dated as of March 1, 1997, and amended by agreements dated as of March 1, 1998,
and as of March 1, 1999 (collectively, the "Employment Agreement").

          WITNESSETH:

          WHEREAS, the Company and Employee desire to extend the Employment
Agreement for an additional one-year period.

          NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants contained herein and in the Employment Agreement, the parties hereto
agree as follows:

          A. Section 2 of the Employment Agreement is hereby amended to extend
the term of said Agreement through March 31, 2001.

          B. Except as expressly modified herein, the Employment Agreement shall
remain in full force and effect in accordance with its terms.

          IN WITNESS WHEREOF, the parties hereto have duly executed this Third
Amendment as of the day and year first above written.

WITNESS:                                                   COMPANY

                                                   MECHANICAL DYNAMICS, INC.

/s/ Linda K. Moore                           By: /s/ Robert R. Ryan, President
-------------------------                        ------------------------------
                                                 Robert R. Ryan, President

                                                           EMPLOYEE

/s/ Linda K. Moore                               /s/ David Peralta
-------------------------                        ------------------------------
                                                 David Peralta<PAGE>   1

                                                                  EXHIBIT 10(f)

                 FIRST AMENDED AND RESTATED CONSULTING AGREEMENT

         This FIRST AMENDED AND RESTATED CONSULTING AGREEMENT, dated as of
January 9, 1998, among UNIPROP MANUFACTURED HOUSING COMMUNITIES INCOME FUND, a
Michigan limited partnership (the "Partnership"), P.I. ASSOCIATES, a Michigan
limited partnership (the "General Partner") and MANUFACTURED HOUSING SERVICES
INC. (the "Consultant").

                              W I T N E S S E T H:
                              - - - - - - - - - -

         WHEREAS, pursuant to the Section 12i of the Agreement of Limited
Partnership (as amended by the First Amendment to Uniprop Manufactured Housing
Communities Income Fund Agreement of Limited Partnership dated May 16, 1985,
executed as of March 4, 1986, and by the Second Amendment to Agreement of
Limited Partnership dated as of February 6, 1997, the "Partnership Agreement"),
the General Partner has no authority to take any action without the prior
consent of the Consultant, to the extent that such consent is required by this
Agreement, without the prior approval of a majority in interest of the Limited
Partners of the Partnership;

         WHEREAS, the Partnership, the General Partner and the Consultant
entered into a Consulting Agreement as of February 10, 1986 in order to set
forth the types of transactions as to which the General Partner is required to
consult with the Consultant and the terms and conditions on which the Consultant
will provide such consulting services; and

         WHEREAS, the Partnership, the General Partner and the Consultant now
desire to enter into this First Amended and Restated Consulting Agreement (the
"Agreement") to modify and expand upon the services to be provided by the
Consultant and to provide for a fee to be paid to the Consultant;

         NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, the parties hereto agree as follows:

         1. Transactions Covered. The Partnership and the General Partner agree
that in the following transactions and matters the General Partner (i) shall
consult with the Consultant and obtain its written recommendation, and (ii)
shall not take action on such transactions or matters on behalf of the
Partnership contrary to any recommendation of the Consultant without the prior
approval of a majority in interest of the Limited Partners.

                  a.       The Financing of any Property owned by the
                           Partnership. In this connection, the General Partner
                           shall obtain the written affirmative recommendation
                           of the Consultant prior to incurring any indebtedness
                           or pledging directly or indirectly any property of
                           the Partnership as security for the payment of any
                           obligation.

                  b.       The sale of any Property owned by the Partnership. In
                           this connection, the General Partner shall obtain the
                           written affirmative recommendation of the Consultant
                           prior to entering into any agreement for the sale of
                           any

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                           Property, but not including occasional sales in the
                           ordinary course of business of inventory, operating
                           equipment or furniture, fixtures and equipment.

                  c.       The entering into by the Partnership of any other
                           Capital Transaction. In this connection, the General
                           Partner shall obtain the written affirmative
                           recommendation of the Consultant prior to entering
                           into any agreement for or with respect to a Capital
                           Transaction on behalf of the Partnership.

                  d.       Annual appraisals of Properties and net asset value
                           per Unit. In this connection, the General Partner
                           shall obtain the written affirmative recommendation
                           of the Consultant prior to selecting any real estate
                           appraiser other than Cushman & Wakefield, Inc. to
                           perform the annual appraisal of the Properties, and
                           the General Partner shall select only national real
                           estate appraisers comparable in reputation to Cushman
                           & Wakefield, Inc.

                  e.       Property  management  arrangements.  In this
                           connection, the General Partner shall obtain the
                           written affirmative recommendation of the Consultant
                           prior to taking any action authorizing any party
                           other than Uniprop, Inc. to provide management
                           services with respect to any of the Properties and
                           prior to authorizing any arrangement with any
                           property manager, including Uniprop, Inc., with
                           respect to fees payable for such management services,
                           other than as set forth in the Partnership Agreement.
                           The Consultant has the right at any time to recommend
                           the removal or change of any property manager.

                  f.       The entering  into by the  Partnership  of any
                           other agreement. In this connection, the General
                           Partner shall furnish to the Consultant, prior to
                           entering into, a copy of every written agreement and
                           a summary of every oral agreement to be entered into
                           by or on behalf of the Partnership or the General
                           Partner (in its capacity as such) involving (i) the
                           furnishing of property or services to the Partnership
                           by any person other than the General Partner if such
                           agreement provides for payment by the Partnership
                           equal to or in excess of $50,000 in any year, or (ii)
                           the furnishing of property or services to the
                           Partnership by the General Partner or an Affiliate of
                           the General Partner if such agreement provides for
                           payment by the Partnership in excess of $25,000 in
                           any year and in the case of each of clauses (i) or
                           (ii) shall obtain the written affirmative
                           recommendation of the Consultant prior to entering
                           into any such agreement relating to the Partnership's
                           business. The Consultant has the right at any time to
                           recommend the amendment or termination of any such
                           agreement in accordance with its terms.

                  g.       The establishment of Reserves. In this connection,
                           the General Partner shall obtain the written
                           affirmative recommendation of the Consultant

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                           prior to creating or distributing any Reserves and
                           prior to changing the level of Reserves that the
                           Partnership shall maintain.

                  h.       Amendment of the Partnership Agreement. In this
                           connection, the General Partner shall obtain the
                           written affirmative recommendation of the Consultant
                           prior to effecting any amendment to the Partnership
                           Agreement or submitting any proposed amendment for
                           approval by the Limited Partners.

                  i.       Reports to Partners. In this connection, the General
                           Partner shall furnish to the Consultant or its
                           designated Affiliate all information furnished to the
                           Limited Partners generally.

                  j.       Investor servicing. In this connection, the
                           Consultant has the right at any time to recommend the
                           removal of any person performing investor services
                           for the Partnership and to recommend the appointment
                           of any other person, including itself or an Affiliate
                           of the Consultant, to perform such services at
                           reasonable cost to the Partnership.

                  k.       Insurance. In this connection, the General Partner
                           shall obtain, prior to entering into any contract of
                           insurance with respect to the Partnership or the
                           Properties, the written affirmative recommendation of
                           the Consultant as to the type, terms and amounts of
                           insurance to be maintained under such contract. The
                           Consultant shall have the right at any time to make
                           recommendations to the General Partner as to
                           increasing, decreasing or otherwise changing the
                           type, terms and amounts of insurance maintained by
                           the Partnership, so long as the costs of such
                           insurance are reasonable.

                  l.       Selection of accountants. In this connection, the
                           General Partner shall obtain the written affirmative
                           recommendation of the Consultant prior to the
                           selection of any Person to perform accounting
                           services for the Partnership other than BDO Seidman,
                           LLP, and the Consultant shall have the right at any
                           time to recommend to the General Partner the change
                           or removal of any accountants performing services for
                           the Partnership, provided such change shall not cause
                           the Partnership to incur unreasonable additional
                           costs.

         2.       Consulting Services.

                  a.       The General Partner shall submit from time to time
                           in writing to the Consultant each proposal to be
                           considered by the Consultant pursuant to the
                           provisions of Section 1 above, and shall notify the
                           Consultant of the date the Consultant's
                           recommendation shall be submitted, which date shall
                           not be less than fifteen business days after the
                           receipt of the General Partner's notice unless
                           otherwise agreed in writing by the Consultant. The
                           Consultant shall render its recommendation to the
                           Partnership by the date

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                           specified by the General Partner; provided that the
                           Consultant may submit its recommendation to the
                           Partnership up to thirty calendar days after the date
                           specified by the General Partner if the Consultant
                           submits a written request for such an extension to
                           the General Partner and the General Partner receives
                           that request on or before the due date originally
                           specified. If the General Partner makes a material
                           modification to the proposal during the 15 business
                           day period or during the 30 calendar day extension,
                           if applicable, the Consultant may submit its
                           recommendation up to 15 calendar days after the end
                           of the 15 business day period or 30 calendar day
                           extension, as applicable. The General Partner shall
                           concurrently or thereafter furnish to the Consultant
                           the following information:

                           (i)      if the General  Partner has  submitted a
                                    proposal for the Financing of a Property by
                                    the Partnership, current operating
                                    information concerning such Property
                                    including the latest financial statements
                                    for such Property, the proposed terms of
                                    such Financing including whether any lender
                                    will require as a condition to such
                                    Financing that its consent be obtained prior
                                    to any change in or removal of the General
                                    Partner of the Partnership, and projections
                                    showing the impact of the proposed Financing
                                    on the anticipated results of operation of
                                    the Property and allocations and
                                    distributions of the Partnership;

                           (ii)     if the General Partner has submitted a
                                    proposal for the sale of a Property by the
                                    Partnership, current operating information
                                    concerning such Property including the
                                    latest financial statements for such
                                    Property and the proposed terms of sale
                                    including whether the Partnership intends to
                                    accept purchase-money obligations from the
                                    buyers of such Property; and

                           (iii)    with respect to every other transaction or
                                    matter listed in Section 1 above, such
                                    information as the Partnership possesses
                                    that is directly or indirectly related to
                                    the matter being considered by the
                                    Consultant.

         In addition, the General Partner shall furnish to the Consultant such
other information as is in its possession upon request with respect to any such
transaction or matter and shall endeavor to obtain such other information as the
Consultant shall reasonably request if it is not then in the possession of the
General Partner.

                  b.       The Consultant shall review all proposals submitted
                           to it by the General Partner for the transactions and
                           matters listed in Section 1 above and shall provide
                           the General Partner and the Partnership with a
                           written recommendation with respect to each such
                           proposal. The Consultant's recommendation shall
                           address the proposal from the perspective of the
                           Partnership and its Limited Partners. The Consultant
                           shall submit its

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                           recommendation to the General Partner on or before
                           the date specified in Section 2(a).
                  c.
                           If the  Consultant  makes a  recommendation  with
                           respect to any transaction or matter covered by
                           Section 1 and the General Partner determines to
                           solicit the approval of a majority in interest of the
                           Limited Partners of the Partnership in order that it
                           may nevertheless enter into such transaction or
                           matter on the Partnership's behalf or not comply with
                           the recommendation of the Consultant, the General
                           Partner shall, not less than 15 days before the first
                           mailing of materials soliciting the approval of any
                           Limited Partner, notify promptly the Consultant of
                           such determination by the General Partner. The
                           Consultant shall thereupon have the right to furnish
                           to the General Partner a written statement of the
                           Consultant in support of its recommendation within 10
                           days after the notice of the General Partner referred
                           to in the preceding sentence. The General Partner
                           shall include in its soliciting material the
                           statement of the Consultant, and neither the General
                           Partner nor the Partnership shall be responsible for
                           such statement. If the General Partner intends to
                           include in its soliciting material any statement
                           supporting the approval by the Limited Partners, the
                           General Partner shall, not later than five days prior
                           the earlier of the date such soliciting materials are
                           first filed with the Securities and Exchange
                           Commission or mailed to the Limited Partners, furnish
                           to the Consultant a copy of the General Partner's
                           statement supporting approval by the Limited
                           Partners.

                           The Consultant's written recommendation shall be in a
                           form suitable for distribution to the Limited
                           Partners and for filing with the Securities and
                           Exchange Commission or state securities regulators as
                           part of a registration statement or proxy statement.
                           The Consultant agrees that it will revise or expand
                           upon such written recommendation if and to the extent
                           required by the Securities and Exchange Commission or
                           any other regulatory authority. The parties
                           acknowledge that the requirements of the paragraph do
                           not expand upon the scope of the recommendation
                           letter required to be rendered by the Consultant
                           pursuant to Section 2(b). In particular, the parties
                           acknowledge that if a formal fairness opinion were
                           required to be rendered in connection with a
                           particular proposal, the preparation and rendering of
                           such an opinion would be outside the scope of this
                           Agreement. The Partnership and the General Partner
                           would be free to contract with the Consultant or with
                           any other party, in their sole and absolute
                           discretion, to obtain such a formal fairness opinion.

         3. Compensation. For its services hereunder, the Consultant will be
paid a fee of $18,000 annually, as adjusted beginning on January 1, 2000 in
accordance with the change in Consumer Price Index for all Urban Consumers (the
"CPI-U") as set forth in the fourth paragraph of this Section (the "Consultant's
Fee"). The Consultant's Fee shall be payable in four equal installments, in part
in advance and in part in arrears, on the forty-fifth day of each calendar

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quarter. If this Agreement commences other than on the first day of a calendar
quarter the Consultant's Fee for the partial calendar quarter shall be pro rated
to reflect the actual number of days in the calendar quarter for which the
Consultant is to provide services and shall be paid on the forty-fifth day of
such calendar quarter or on the date of commencement of this Agreement, if
later.

         If this Agreement terminates for cause pursuant to Section 5(a) hereof,
no further Consultant's Fee shall be payable pursuant to this Agreement. If the
for-cause termination occurs other than on the last day of a calendar quarter,
the Consultant's Fee shall be pro rated to reflect the actual number of days in
the calendar quarter for which this Agreement is in force, and within 10
business days following termination the Partnership shall pay the Consultant any
amount then owing or the Consultant shall refund to the Partnership any amount
overpaid with respect to that quarter, as the case may be.

         If this Agreement terminates for any reason other than a for-cause
termination pursuant to Section 5(a) hereof, the Partnership shall continue to
pay the Consultant the Consultant's Fee through the period ending seven years
from the date of this Agreement.

         Beginning January 1, 2000, the Consultant's fee shall be adjusted once
annually using the percentage change (computed on a time-weighted, annualized
basis) of the yearly CPI-U published by the United States Bureau of Labor
Statistics (the "BLS"), or if such index is not published annually, then the
CPI-U published for periods closest to annually. If the CPI-U is no longer
published by the BLS, the CPI-U shall mean that rate determined by the General
Partner as the closest approximation of the CPI-U. The calculation of the CPI-U
shall take 1999 as its base period.

         In addition, the Consultant shall be reimbursed up to a maximum of
$11,250 in any year for all accountable out-of-pocket expenses incurred by it in
connection with the performance of consulting services hereunder, other than
expenses for any person retained by Consultant to perform an additional current
appraisal of a Property in connection with a transaction being reviewed by
Consultant. The Consultant shall not have recourse against the General Partner
in the event such fees and expenses are not paid by the Partnership. This
Section 3 shall survive termination of this Agreement.

         4. Term. Unless sooner terminated under Section 5, this Agreement shall
continue until the first to occur of the following: the expiration of this
Agreement on January 8, 2005; the dissolution and liquidation of the Partnership
in accordance with the terms of the Partnership Agreement; or the expiration of
the term of the Partnership as provided therein. The term of this Agreement may
be extended by mutual agreement of all of the parties.

         5. Termination for Cause. The Partnership or the General Partner may
terminate this Agreement at any time for cause upon delivery of written notice
to the Consultant. The Consultant may terminate this Agreement at any time for
cause upon delivery of written notice to the Partnership.

                  a.       The Partnership or General Partner shall have cause
                           for termination:

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                           (i)      If the Consultant  shall default in the
                                    performance of its  obligations  pursuant
                                    to Section 2(b) of this Agreement; or

                           (ii)     If bankruptcy, reorganization, arrangement,
                                    insolvency or liquidation proceedings, or
                                    other proceedings for relief under any
                                    bankruptcy law or similar law for the relief
                                    of debtors, are instituted by or against the
                                    Consultant, are allowed against the
                                    Consultant or are consented to or are not
                                    dismissed, stayed or otherwise nullified
                                    within thirty days after such institution;
                                    or

                           (iii)    If Donald Petrow shall cease to be the sole
                                    shareholder and President of the Consultant
                                    unless the Partnership, in its sole and
                                    absolute discretion, shall give written
                                    consent for the transfer of Donald Petrow's
                                    ownership interest in the Consultant; or

                           (iv)     If any change in applicable law renders this
                                    Agreement, in whole or material part,
                                    illegal or unenforceable.

                  b.       The Consultant shall have cause for termination:

                           (i)      If the Partnership or the General Partner
                                    shall default in the performance of any
                                    material covenant, agreement, term or
                                    provision of this Agreement and such default
                                    shall continue for a period of sixty days
                                    after written notice to the Partnership from
                                    the Consultant stating the specific default;
                                    or

                           (ii)     If bankruptcy, reorganization, arrangement,
                                    insolvency or liquidation proceedings, or
                                    other proceedings for relief under any
                                    bankruptcy law or similar law for the relief
                                    of debtors, are instituted by or against the
                                    Partnership, and, if instituted against the
                                    Partnership, are allowed against the
                                    Partnership or are consented to or are not
                                    dismissed, stayed or otherwise nullified
                                    within thirty days after such institution;
                                    or

                           (iii)    If any change in applicable law renders this
                                    Agreement, in whole or material part,
                                    illegal or unenforceable.

                  c.       Upon the expiration or termination of this Agreement,
                           no party shall have any further right hereunder or
                           any further obligation hereunder to the others,
                           except for the obligations, promises or covenants
                           contained herein which are expressly made to extend
                           beyond the term of this Agreement.

                  d.       Any party having actual knowledge of an event
                           creating cause for termination of this Agreement
                           shall be deemed to have waived its right to terminate
                           with cause on the basis of that particular event
                           pursuant to this

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                           Section 5 if it has not exercised its termination
                           right within 30 calendar days after actually knowing
                           of the event.

         6. Relationship of the Parties. It is expressly understood and agreed
by the parties that, in providing services under this Agreement, the Consultant
shall at all times act as an independent contractor, not as an employee or agent
of the Partnership, nor shall the Partnership be an employee or agent of the
Consultant. Further, it is expressly understood and agreed by the parties that
nothing contained in this Agreement shall be construed to create a joint
venture, partnership, association or other affiliation or like relationship
among the parties, or a relationship of landlord and tenant, it being
specifically agreed that their relationship is and shall remain that of
independent parties to a contractual relationship as set forth in this
Agreement. In no event shall either party be liable for the debts or obligations
of the other of them, except as otherwise specifically provided in this
Agreement.

         7.       Indemnification.

                  (a)      The  Partnership  agrees to indemnify and hold
                           harmless the Consultant against any losses, claims,
                           damages or liabilities, joint or several, to which
                           the Consultant may become subject under this
                           Agreement, insofar as such losses, claims, damages or
                           liabilities (or actions in respect thereof) arise out
                           of or are based upon any breach or alleged breach of
                           this Agreement by the Partnership or the General
                           Partner. The Partnership will reimburse the
                           Consultant for any legal or other expenses reasonably
                           incurred by the Consultant in connection with
                           investigating or defending against any such loss,
                           claim, damage, liability or action; provided,
                           however, that if the Partnership has specifically
                           agreed to pay any settlement or judgment in respect
                           of such action or claim, has made all such
                           reimbursements of such expenses to such date and can
                           reasonably demonstrate the continuing financial
                           ability to comply with the terms of this Section
                           7(a), it shall not be required to indemnify the
                           Consultant for any payment made by the Consultant to
                           any claimant in settlement of any suit or claim
                           unless such payment is approved by the Partnership
                           (which approval shall not be unreasonably withheld)
                           or by a court having jurisdiction of the controversy;
                           and provided further that the Partnership shall not
                           be liable under this Section 7(a) for any losses,
                           claims, damages or liabilities arising out of any act
                           or failure to act on the part of any other person,
                           but shall be liable only with respect to the
                           Partnership's own acts or failures to act. This
                           Section 7(a) shall remain in full force and effect
                           notwithstanding any investigation made by the
                           Consultant or on behalf of the Consultant, shall
                           survive termination of this Agreement, and shall be
                           in addition to any liability which the Partnership
                           may otherwise have.

                  (b)      The  Consultant  agrees to  indemnify  and hold
                           harmless the Partnership and the General Partner, and
                           any person which controls either of them, against any
                           losses, claims, damages or liabilities, joint or
                           several, to which the Partnership or the General
                           Partner or such controlling person may become

                                      -8-

<PAGE>   9

                           subject, under this Agreement, insofar as such
                           losses, claims, damages or liabilities (or actions in
                           respect thereof) arise out of or are based upon any
                           breach or alleged breach of this Agreement by the
                           Consultant. The Consultant will reimburse the
                           Partnership and the General Partner for any legal or
                           other expenses reasonably incurred by them in
                           connection with investigating or defending against
                           any such loss, claim, damage, liability or action;
                           provided, however, that if the Consultant has
                           specifically agreed to pay any settlement or judgment
                           in respect of such action or claim, has made all such
                           reimbursements of such expenses to such date and can
                           reasonably demonstrate the continuing financial
                           ability to comply with the terms of this Section
                           7(b), the Consultant shall not be required to
                           indemnify the Partnership or the General Partner for
                           any payment made to any claimant in settlement of any
                           suit or claim unless such payment is approved by the
                           Consultant (which approval shall not be unreasonably
                           withheld), or by a court having jurisdiction of the
                           controversy; and provided further that the Consultant
                           shall not be liable under this Section 7(b) for any
                           losses, claims, damages or liabilities arising out of
                           any act or failure to act on the part of any other
                           person, but shall be liable only with respect to the
                           Consultant's own acts or failures to act. This
                           indemnity shall remain in full force and effect
                           notwithstanding any investigation made by or on
                           behalf of the Partnership or the General Partner,
                           shall survive any termination of this Agreement, and
                           shall be in addition to any liability which the
                           Consultant may otherwise have.

                  (c)      No indemnifying  party  shall be  liable  under  the
                           indemnity provisions contained in Sections 7(a) and
                           7(b) unless the indemnified party shall have notified
                           such indemnifying party in writing promptly after the
                           first written notice or the summons or other first
                           legal process giving information of the nature of the
                           claim or of the commencement of the action shall have
                           been delivered to or served upon the indemnified
                           party (but failure to notify an indemnifying party of
                           any such claim shall not relieve it from any
                           liability otherwise than on account of its indemnity
                           rights contained in Sections 7(a) or 7(b) which it
                           may have to the indemnified party against whom action
                           is brought). In case any claim is made or any action
                           is brought against any indemnified party upon any
                           claim as to which such indemnified party claims
                           indemnity pursuant to Sections 7(a) or 7(b) or
                           otherwise, the indemnifying party shall be entitled
                           to participate at its own expense in the defense, or,
                           if it so elects, in accordance with arrangements
                           satisfactory to any other indemnifying party or
                           parties similarly notified, to assume the defense
                           thereof, with counsel who shall be satisfactory to
                           such indemnified party and any other indemnified
                           parties who are defendants in such action; and after
                           notice from the indemnifying party to such
                           indemnified party of its election so to assume the
                           defense thereof and the retaining of such counsel by
                           the indemnifying party, the indemnifying party shall
                           not be liable to such indemnified party under
                           Sections 7(a) or 7(b) or otherwise for any legal or
                           other expenses subsequently incurred by

                                      -9-

<PAGE>   10

                           such indemnified party in connection with the defense
                           thereof, other than the reasonable costs of
                           investigation. Notwithstanding the election of an
                           indemnifying party to assume the defense of any such
                           action, if (i) the indemnifying party shall not have
                           employed counsel to have charge of the defense of
                           such action or proceeding or (ii) such indemnified
                           party shall have reasonably concluded that there may
                           be defenses available to it which are different from
                           or additional to those available to the indemnifying
                           party (in which case the indemnifying party shall not
                           have the right to direct the defense of such action
                           or proceeding on behalf of the indemnified party),
                           then in either of such events the indemnifying party
                           shall bear all legal or other expenses incurred by
                           the indemnified party in connection with the defense
                           of such action.

         8. Waiver. The failure of a party to insist upon strict adherence to
any term of this Agreement on any occasion shall not be considered a waiver or
deprive that party of the right thereafter to that term or any other term of
this Agreement.

         9. Entire Agreement. This Agreement supersedes all previous contracts
or agreements among the parties with respect to the subject matter hereof and
constitutes the entire Agreement among the parties with respect thereto.

         10. Amendments. This Agreement may be amended only be an instrument in
writing signed in the manner provided in Section 12 below, effective as of the
date stipulated therein.

         11. Invalidity of Particular Provisions. If any term or provisions of
this Agreement, or any application thereof to any person or circumstance shall
to any extent, be invalid or unenforceable, the remainder of this Agreement, or
the application of such term or provision to persons or circumstances other than
those as to which it is held invalid or unenforceable, shall not be affected
thereby and each term and provision of this Agreement shall be valid and be
enforceable to the fullest extent allowable by law.

         12. Execution. This Agreement and any amendments hereto shall be
executed in no fewer than two counterparts by a duly authorized officer or agent
of each party hereto. Each counterpart so executed shall be deemed an original,
but all original counterparts shall together constitute one and the same
instrument.

         13. Further Actions. Each of the parties agrees that it shall hereafter
execute and deliver such further instruments and do such further acts and things
as may be reasonably required or useful to carry out the intent and purpose of
this Agreement and as are not inconsistent with the terms hereof.

         14. Successors and Assigns. This Agreement shall be binding upon and
shall inure to the benefit of the Consultant, the General Partner, the
Partnership and their respective successors and assigns. This Agreement may not
be assigned by the General Partner or the Partnership

                                      -10-

<PAGE>   11

without the prior written consent of the Consultant. This Agreement may not be
assigned by the Consultant without the prior written consent of the General
Partner.

         15. Notices. All demands, notices and other communications under this
Agreement shall be in writing shall be personally delivered or sent by
registered mail, telecopy or overnight courier, shall be deemed to have been
duly given when received, and shall be addressed as follows:

                  To the General Partner or the Partnership:

                           P.I. Associates
                           280 Daines Street, 3rd Floor
                           Birmingham, Michigan  48009
                           Attention:  Mr. Paul M. Zlotoff

                  with a copy to:

                           Nicholas S. Hodge, Esq.
                           Edwards & Angell
                           101 Federal Street
                           Boston, MA  02110
                           Fax:  (617) 439-4170

                  To the Consultant:

                           Manufactured Housing Services, Inc.
                           Attention:  Mr. Donald E. Petrow, President
                           14 Pitching Way
                           Scotch Plains, New Jersey  07076
                           Fax:  (908) 889-7326

                  with a copy to:

                           Jonathan Baum, Esq.
                           39 Hollenbeck Avenue
                           Great Barrington, MA  01230
                           Fax:  (413) 528-6725

or at such address as may hereafter be furnished in writing by any party to the
others.

         16. Defined Terms. Capitalized terms defined in the Partnership
Agreement but not defined herein shall have the same meanings as are provided
therefor in the Partnership Agreement.

         17. Governing Law. This Agreement shall be governed by, and construed
and enforced in accordance with, the internal laws of the State of New York.

                                      -11-

<PAGE>   12

         18. Remedies. In the case of any disputes arising under this Agreement,
the prevailing party shall be entitled to recover reasonable legal fees and
costs from the adverse party.

         IN WITNESS WHEREOF, the parties hereto have executed this Consulting
Agreement as of the date first above written.

                         UNIPROP MANUFACTURED HOUSING
                         COMMUNITIES INCOME FUND,
                         a Michigan Limited Partnership

                         By:     P.I. Associates, a Michigan Limited
                                 Partnership, General Partner

                         By: /s/ Paul M. Zlotoff
                             -----------------------

                         P.I. ASSOCIATES,
                         a Michigan Limited Partnership

                         By: /s/ Paul M. Zlotoff
                             -----------------------

                         MANUFACTURED HOUSING
                          SERVICES, INC.

                         By: /s/ Donald E. Petrow
                             -----------------------

                                      -12-

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