Document:

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                                                                        Ex. 10.6

                       THIRD AMENDMENT TO CONTRACT OF SALE

         This Third Amendment to Contract of Sale is made and entered into as of
the 14th day of May, 2004, by and between FO SKI RESORTS, LLC ("FOSR"), a
Massachusetts limited liability company, and BRODIE MOUNTAIN RESORTS, INC.
("BMR"), a Massachusetts business corporation (FOSR and BMR are herein referred
to collectively as "Seller"), and SILVERLEAF RESORTS, INC., a Texas corporation
("Purchaser").

                               W I T N E S S E T H

         WHEREAS, on December 24, 2002, Seller and Purchaser entered into that
certain Contract of Sale pursuant to which Seller agreed to sell and Purchaser
agreed to purchase that certain tract of land containing approximately 500
acres, more or less, located on Route 7 in New Ashford, Berkshire County,
Massachusetts, being more particularly described in the Contract (the
"Property"); and

         WHEREAS, pursuant to a First Amendment to Contract of Sale dated April
3, 2003, and a Second Amendment to Contract of Seller dated March 17, 2004,
Seller and Purchaser have agreed on certain modifications in the terms and
conditions of the Contract (hereinafter the Contract as modified is referred to
as the "Contract"); and

         WHEREAS, Seller and Purchaser desire to further modify the terms and
conditions of the Contract pertaining to the deadline for closing of the
Contract in order to provide Purchaser with additional time to seek a variance
from the Massachusetts Department of Public Safety Architectural Access Board
provisions which require an elevator in three story buildings (the "Variance");

         NOW, THEREFORE, in consideration of the mutual promises and covenants
contained herein, and other good and valuable consideration, the receipt,
accuracy and sufficiency of which is hereby acknowledged, Seller and Purchaser
hereby agree as follows:

         1.       Notwithstanding anything to the contrary contained in the
Contract, Seller and Purchaser hereby agree that the closing of the Contract
shall occur either (i) on July 16, 2004, or (ii) within ten (10) days following
the date on which Purchaser obtains the Variance, whichever occurs earlier.

         2.       As consideration for the extension of the deadline for closing
of the Contract as set forth herein, upon execution of this Third Amendment, the
Seller and Purchaser covenant as follows:

         a.       Purchaser shall deliver to Seller an additional Fifty Thousand
                  Dollars ($50,000.00) in earnest money. The additional $50,000
                  earnest money deposit

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                  that must be made by Purchaser in order to extend the deadline
                  for closing of the Contract as set forth herein shall be
                  non-refundable to Purchaser except in the event of a default
                  by Seller under the Contract, but, if the Contract closes,
                  shall be applied in partial satisfaction of the purchase price
                  payable under the Contract.

         b.       At closing, Purchaser shall engage the Seller in an operating
                  agreement for the operation of the Property for a term to
                  commence on the date of closing (as determined in Section 1
                  above) and terminating on April 1, 2005 (Operating
                  Agreement"), unless sooner terminated or extended by mutual
                  agreement of the Seller and Purchaser. The Operating Agreement
                  shall contain, but not be limited to, the following terms and
                  conditions:

                  i.       Purchaser shall be responsible for (A) property and
                           liability insurance covering the Property with the
                           Seller named as an additional insured; (B) real
                           estate taxes; (C) management fee to Jiminy Peak, Inc.
                           of $4,000.00 per month; (D) any necessary repairs to
                           the Property in excess of $500.00 per repair (which
                           repairs Seller shall submit to Purchaser for prior
                           review and approval); (E) damage repair caused by
                           force majeure (ex. storm damage).

                  ii.      Seller shall have the following rights and
                           responsibilities under the Operating Agreement during
                           the term thereof:

                           A.       Right and obligation to operate the lodging,
                                    camping, tubing and food service activities
                                    on the Property and the right to all of the
                                    income stream from such activities;

                           B.       The responsibility for obtaining and
                                    maintaining all necessary permits and
                                    approvals for the operation of the
                                    activities set forth in Section 2.b.ii.A;

                           C.       Obligation of maintaining general upkeep of
                                    the Property to include water system
                                    maintenance and operation, lawn mowing, and
                                    snow removal;

                           D.       The obligation for necessary repairs to the
                                    Property less than $500.00 per repair;

                           E.       The responsibility for all utility costs
                                    associated with the Property (ex. electric,
                                    propane and telephone);

                           F.       The right to all reimbursements from Tower
                                    Ventures II, LLC ("TV II") for electrical
                                    service to the TV II cellular facility
                                    towers on the Property;

                           G.       The right to all income from the TV II
                                    cellular facility towers pursuant to the
                                    Perpetual Easement and License Agreement to
                                    Tower Ventures, Inc., dated February 13,
                                    2001, as may be amended from time to time;

                           H.       Responsibility for maintaining liability
                                    insurance covering the Seller's activities
                                    on the Property with the Purchaser named as
                                    an additional insured;

                           I.       The right to use any and all of Purchaser's
                                    equipment located on and associated with the
                                    Property.

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         c.       Purchaser agrees that in the event of a termination of the
                  Contract by Purchaser for any reason other than for default of
                  Seller, Purchaser shall (a) assign and convey over to Seller
                  all of Purchaser's right, title and interest in and to any and
                  all developmental and operating permits, licenses, approvals,
                  authorizations, Hydro geology Study (as defined in Article VI
                  of the Contract) and ALTA surveys obtained or produced by
                  Purchaser in conjunction with the development of the project
                  contemplated under the Contract, including, but not limited
                  to, any and all applications for same, and (b) provide Seller
                  with complete copies of all development products produced or
                  obtained by Purchaser in conjunction with the development of
                  the project contemplated under the Contract, including, but
                  not limited to, title abstracts and reports, title
                  commitments, development plans, site plans, engineering
                  studies and plans, utility plans, soil tests, and
                  environmental tests.

         Except as specifically set forth above, all terms and conditions of the
Contract shall remain in full force and effect. All capitalized terms not
otherwise defined herein shall have the meaning given to such terms in the
Contract.

         IN WITNESS WHEREOF, the undersigned have executed this Amendment under
seal, as of the date and year first above written.

                                            SELLER:

                                            FO SKI RESORTS, LLC, a Massachusetts
                                            limited liability company

                                            By:      /S/ BRIAN H. FAIRBANK
                                                     ---------------------------
                                                     Brian H. Fairbank, Manager

                                            BRODIE MOUNTAIN RESORTS, INC., a
                                            Massachusetts business corporation

                                            By:      /S/ BRIAN H. FAIRBANK
                                                     ---------------------------
                                                     Brian H. Fairbank, Manager

                                            PURCHASER:

                                            SILVERLEAF RESORTS, INC., a Texas
                                            corporation

                                            By:      /S/ ROBERT E. MEAD
                                                     ---------------------------
                                            Name:    Robert E. Mead
                                            Its:     CEO<PAGE>
                                                                    EXHIBIT 10.1

                              CONSULTING AGREEMENT

      This Consulting Agreement (the "Agreement") is made and entered into as of
August 6, 2004 (the "Effective Date"), by and between Boundless Motor Sports
Racing, Inc., a Colorado corporation (the "Company"), and Glenn Donnelly
("Consultant").

                              W I T N E S S E T H:

      WHEREAS, The Company desires to retain the services of Consultant as
provided herein, and Consultant desires to provide such services; and

      WHEREAS, Consultant shall, as an Consultant of the Company, have access to
confidential information with respect to the Company and its affiliates;

      NOW THEREFORE, for and in consideration of the mutual covenants and
agreements contained herein, and for other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the parties hereto
agree as follows:

      1.    Consulting Services. The Company hereby retains Consultant as an
independent contractor, and not as an employee of the Company, in an advisory
and consultative capacity during the Consulting Period (as defined below).
During the Consulting Period, Consultant will, upon the request of the Chief
Executive Officer of the Company (the "CEO"), consult with and advise the
Company and will use his best efforts to assist the Company in operating the
Super Dirt Week (as defined below) currently being held annually by the Company
and/or its affiliates in Syracuse, New York. In addition, Consultant will assist
the Company in identifying and operating additional Super Dirt Weeks to be held
in the contiguous United States. As used herein, "Super Dirt Week" means an
event at which sprint, late model and modified class cars all race at the same
venue during at least three consecutive days. Consultant acknowledges that the
provision of his services under this Agreement will require substantially all of
his business time during the Consulting Period and agrees to devote
substantially all of his business time, attention, skills, benefits and best
efforts to the performance of his duties hereunder and to the promotion of the
business and interests of the Company. Consultant shall report directly to the
CEO and the CEO shall be solely responsible for approving all scheduling and
other arrangements related to the Super Dirt Weeks.

      2.    Consulting Period. The term of this Agreement shall commence on the
Effective Date and shall continue, unless earlier terminated pursuant to Section
6 below, for a period of two years thereafter (the "Consulting Period").
Notwithstanding the foregoing, in the event one or more Super Dirt Weeks
scheduled to be held during the Company's 2006 racing season occur after the
termination of this Agreement, Consultant agrees to continue to provide the
Company with his consulting services for those Super Dirt Weeks (the "Extended
Period").

      3.    Compensation. As compensation for services rendered under this
Agreement, during the Consulting Period Consultant shall be entitled to receive
the compensation as provided in Exhibit A attached hereto. In addition, the
Company shall reimburse Consultant for all reasonable and necessary
out-of-pocket travel and other expenses incurred by Consultant in

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rendering services required under this Agreement, on a monthly basis upon
submission of a detailed monthly statement and reasonable documentation;
provided, however, that any expense in excess of $500 be approved in writing and
in advance by the CEO. Except as provided in this Section 3 and Exhibit A,
Consultant shall not be entitled to any other consideration or remuneration for
performing his services hereunder.

      4.    Confidentiality.

            (a) Acknowledgment of Proprietary Interest. Consultant recognizes
the proprietary interest of the Company and its affiliates in any Trade Secrets
(as hereinafter defined) of the Company and its affiliates. Consultant
acknowledges and agrees that any and all Trade Secrets learned by Consultant
during the course of his engagement by the Company or otherwise, whether
developed by Consultant alone or in conjunction with others or otherwise, shall
be and is the property of the Company and its affiliates. Consultant further
acknowledges and understands that his disclosure of any Trade Secrets and/or
proprietary information will result in irreparable injury and damage to the
Company and its affiliates. As used herein, "Trade Secrets" means all
confidential and proprietary information of the Company and its affiliates,
including, without limitation, information derived from reports, investigations,
experiments, research, work in progress, drawing, designs, plans, proposals,
codes, marketing and sales programs, client lists, client mailing lists,
financial projections, cost summaries, pricing formula, and all other concepts,
ideas, materials, or information prepared or performed for or by the Company or
its affiliates. "Trade Secrets" also includes information related to the
business, products or sales of the Company or its affiliates, or any of their
respective customers, other than information which is otherwise publicly
available.

            (b) Covenant Not-to-Divulge Trade Secrets. Consultant acknowledges
and agrees that the Company and its affiliates are entitled to prevent the
disclosure of Trade Secrets. As a portion of the consideration for the
employment of Consultant and for the compensation being paid to Consultant by
the Company, Consultant agrees at all times during the Consulting Period and
thereafter to hold in strict confidence and not to disclose or allow to be
disclosed to any person, firm or corporation, other than to persons engaged by
the Company and its affiliates to further the business of the Company and its
affiliates, and not to use except in the pursuit of the business of the Company
and its affiliates, the Trade Secrets, without the prior written consent of the
Company, including Trade Secrets developed by Consultant.

            (c) Return of Materials. In the event this Agreement is terminated
for any reason whatsoever, Consultant will promptly deliver to the Company all
documents, data and other information pertaining to Trade Secrets. Consultant
shall not take any documents or other information, or any reproduction or
excerpt thereof, containing or pertaining to any Trade Secrets.

            (d) Competition During Engagement. Consultant agrees that during the
Consulting Period, neither he, nor any of his affiliates, will directly or
indirectly compete with the Company or its affiliates in any way, and that he
will not act as an officer, director, Consultant, consultant, shareholder,
lender, or agent of any entity which is engaged in any business of the same
nature as, or in competition with, the businesses in which the Company and its
affiliates are now engaged or in which the Company or its affiliates become
engaged during

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the Consulting Period; provided, however, that this Section 5(d) shall not
prohibit Consultant or any of his affiliates from purchasing or holding an
aggregate equity interest of up to 1%, so long as Consultant and his affiliates
combined do not purchase or hold an aggregate equity interest of more than 5%,
in any business in competition with the Company and its affiliates. Furthermore,
Consultant agrees that during the Consulting Period, he will undertake no
planning for the organization of any business activity competitive with the work
he performs as an Consultant of the Company and Consultant will not combine or
conspire with any other Consultants of the Company and its affiliates for the
purpose of the organization of any such competitive business activity.

      5.    Prohibition on Disparaging Remarks. Consultant shall, from the date
of this Agreement on, refrain from making disparaging, negative or other similar
remarks concerning the Company or any of its affiliates to any third party.
Similarly, the Company and its affiliates shall from the date of this Agreement
on, refrain from making disparaging, negative or other similar remarks
concerning Consultant to any third party.

      6.    Termination. This Agreement and the consulting relationship created
hereby shall terminate upon the occurrence of any of the following events:

            (a) The expiration of the Consulting Period as set forth in Section
2 above;

            (b) The death of Consultant;

            (c) The "disability" (as hereinafter defined) of Consultant;

            (d) Written notice to Consultant from the Company of termination for
"just cause" (as hereinafter defined); or

            (e) Written notice to Consultant from the Company of termination for
any reason other than as set forth in this Section 6.

      For purposes of Section 6(c) above "disability" of Consultant shall mean
his inability, because of mental or physical illness or incapacity, to perform
his duties under this Agreement for a continuous period of 120 days or for 120
days out of a 150-day period.

      For purposes of Section 6(d) above, "just cause" shall mean (a) the
failure of Consultant to diligently or effectively perform his duties under this
Agreement, and Consultant does not cure such failure within ten days following
notice thereof from the CEO; provided, however, that Consultant will not be
entitled to cure failures under this subclause (a) more than one time in any
consecutive three (3) month period, (b) the commission by Consultant of any act
involving moral turpitude or the commission by Consultant of any act or the
suffering by Consultant of any occurrence or state of facts, which renders
Consultant incapable of performing his duties under this Agreement, or adversely
affects or could reasonably be expected to adversely affect the Company's
business reputation, (c) any material breach by Consultant of any of the terms
of, or the failure to perform any material covenant contained in, this
Agreement, and Consultant does not cure such breach or failure within ten days
following notice thereof from the Company; provided, however, that Consultant
will not be entitled to cure any breach or failure under this subclause (c) more
than one time in any consecutive three (3) month period or (d) the violation

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by Consultant of instructions or policies established by the CEO with respect to
Consultant's services hereunder or Consultant's failure to carry out the
reasonable instructions of the CEO.

      Notwithstanding anything to the contrary in this Agreement, the provisions
of Sections 4 and 5 above shall survive any termination, for whatever reason, of
this Agreement. In the event this Agreement is terminated prior to the
completion of the Consulting Period, Consultant shall be entitled only to the
compensation earned by him as of the date of termination, except that if
Consultant's employment is terminated pursuant to Section 6(c) or 6(e) above,
Consultant shall be entitled to receive his monthly salary for the remainder of
the Consulting Period.

      7.    Remedies. Consultant recognizes and acknowledges that in the event
of any default in, or breach of any of, the terms, conditions or provisions of
this Agreement (either actual or threatened) by Consultant, the Company's and
its affiliates remedies at law shall be inadequate. Accordingly, Consultant
agrees that in such event, the Company and its affiliates shall have the right
of specific performance and/or injunctive relief in addition to any and all
other remedies and rights at law or in equity, and such rights and remedies
shall be cumulative.

      8.    Acknowledgments. Consultant acknowledges and recognizes that the
enforcement of any of the provisions set forth in Section 4 and 5 above by the
Company and its affiliates will not interfere with Consultant's ability to
pursue a proper livelihood. Consultant recognizes and agrees that the
enforcement of this Agreement is necessary to ensure the preservation and
continuity of the business and good will of the Company and its affiliates.

      9.    Notices. Any notices, consents, demands, requests, approvals and
other communications to be given under this Agreement by either party to the
other shall be deemed to have been duly given if given in writing and personally
delivered or sent by mail, registered or certified, postage prepaid with return
receipt requested, as follows:

            If to the Company:     Boundless Motor Sports Racing, Inc
                                   2500 McGee Drive, Suite 147
                                   Norman, Texas 73072
                                   Attention: Chief Executive Officer
                                   Fax No.:   (405) 360-5354

            If to Consultant:      Mr. Glenn Donnelly
                                   P.O. Box 240
                                   1 Speedway Drive
                                   Weedsport, New York 14166
                                   Fax. No.:  (315) 834-9734

Notices delivered personally shall be deemed communicated as of actual receipt;
mailed notices shall be deemed communicated as of three days after mailing.

      10.   Entire Agreement. This Agreement contains the entire agreement of
the parties hereto and supersedes all prior agreements and understandings, oral
or written between the

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parties hereto. No modification or amendment of any of the terms, conditions or
provisions herein may be made otherwise than by written agreement signed by the
parties hereto.

      11.   Relationship Between Parties. The parties are entering this
Agreement to create an independent contractor relationship and neither the
Company nor Consultant are employees, partners, joint venturers, agents, or
representatives of the other or have the power to direct or manage the employees
or personnel of the other, nor will either party represent that it has such
power. Neither party has the power, nor will either party represent that it has
the power to bind, assume or create any obligation of any nature, express or
implied, on behalf of the other party.

      12.   Governing Law. This Agreement and the rights and obligations of the
parties hereto shall be governed, construed and enforced in accordance with the
laws of the State of New York.

      13.   Parties Bound. This Agreement and the rights and obligations
hereunder shall be binding upon and inure to the benefit of the Company and
Consultant, and their respective heirs, personal representatives, successors and
assigns. The Company shall have the right to assign this Agreement to any
affiliate or to its successors or assigns. The terms "successors" and "assigns"
shall include any person, corporation, partnership or other entity that buys all
or substantially all of the Company's assets or all of its stock, or with which
the Company merges or consolidates. The rights, duties or benefits to Consultant
hereunder are personal to him, and no such right or benefit may be assigned by
him. The parties hereto acknowledge and agree that the Company's affiliates are
third-party beneficiaries of the covenants and agreements of Consultant set
forth in Sections 4 and 5 above.

      14.   Estate. If Consultant dies prior to the payment of all sums owed, or
to be owed, to Consultant pursuant to Section 3 above, then such sums, as they
become due, shall be paid to Consultant's estate.

      15.   Enforceability. If, for any reason, any provision contained in this
agreement should be held invalid in part by a court of competent jurisdiction,
then it is the intent of each of the parties hereto that the balance of this
Agreement be enforced to the fullest extent permitted by applicable law.
Accordingly, should a court of competent jurisdiction determine that the scope
of any covenant is too broad to be enforced as written, it is the intent of each
of the parties that the court should reform such covenant to such narrower scope
as it determines enforceable.

      16.   Waiver of Breach. The waiver by any party hereto of a breach of any
provision of this Agreement shall not operate or be construed as a waiver of any
subsequent breach by any party.

      17.   Captions. The captions in this Agreement are for convenience of
reference only and shall not limit or otherwise affect any of the terms or
provisions hereof.

      18.   Costs. If any action at law or in equity is necessary to enforce or
interpret the terms of this Agreement, the prevailing party shall be entitled to
reasonable attorneys' fees, costs and necessary disbursements in addition to any
other relief to which he or it may be entitled.

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      19.   Other Obligations. Consultant represents and warrants that he has
not as of the execution of this Agreement assumed any obligations inconsistent
with those contained herein.

      20.   Affiliate. An "affiliate" of any party hereto shall mean any person
controlling, controlled by or under common control with such party.

      21.   Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which shall
constitute one and the same instrument, but only one of which need be produced.

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

                                          BOUNDLESS MOTOR SPORTS RACING, INC.

                                          By: /s/ Paul A. Kruger
                                                  Paul A. Kruger, Chief
                                                  Executive Officer

                                          /s/ Glenn Donnelly
                                              Glenn Donnelly

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                                    EXHIBIT A

1.    Annual Consulting Fee: During the Consulting Period, Consultant shall be
      paid an annual consulting fee of $200,000 per year, payable in equal
      semi-monthly installments. No consulting fee shall be due to Consultant
      for the Extended Period.

2.    Bonuses: Consultant shall be eligible to receive a bonus equal to a
      percentage of the Net Revenue (defined below) of the Company during the
      Company's 2005 and 2006 racing seasons (each, a "Racing Season") that are
      generated by the Super Dirt Week events held by the Company during each of
      such Racing Seasons as follows:

            (a)   Ten percent (10%) of the first $1,500,000 in Net Revenues for
                  the Super Dirt Week events during such Racing Season; plus

            (b)   Five percent (5%) of any Net Revenues in excess of
                  $1,500,000for the Super Dirt Week events during such Racing
                  Season.

      By way of example, if the Company receives $2,000,000 in Net Revenues from
      all Super Dirt Weeks held in the 2005 Racing Season, the bonus due to
      Consultant would be $175,000 ([10% of 1,500,000]+[5% of $500,000]).

      For purposes of calculating these bonuses, "Net Revenue" shall be the
      gross revenue generated by each Super Dirt Week event and collected by the
      Company, less any direct expenses paid, incurred or accrued in connection
      with such Super Dirt Week Event.

                                      A-1

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