Document:

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                                                                   EXHIBIT 10.63

                     FIRST AMENDMENT TO EMPLOYMENT AGREEMENT

         This Employment Agreement (the "Agreement"), dated as of the 24 April,
2003, by and between RAMCO-GERSHENSON PROPERTIES TRUST, a Maryland business
trust (the "Trust"), and BRUCE GERSHENSON ("Executive").

                                    RECITALS

         A.       The Trust and Executive entered into an Employment Agreement
dated as of the 16th day of April, 2001, effective as of May 10, 2001.

         B.       The Trust and Executive desire to amend the terms of said
Employment Agreement.

         THEREFORE, the parties agree as follows:

         1.       Paragraph 1 of the Agreement is hereby amended by deleting the
second sentence thereof and inserting the following in lieu thereof:

         "Executive will devote up to 600 hours during the first full year of
         the Agreement and up to 400 hours during each of the second and third
         full years of the Agreement of his business time and attention to the
         performance of his duties under this Agreement as specifically
         requested by the Trust."

         2.       Paragraph 3 of the Agreement is hereby amended by deleting the
first sentence thereof and inserting the following in lieu thereof:

         "During the first year of the Term, Executive will receive a salary at
         the annual rate of $100,000; during each of the second and third years,
         $75,000; and during each of the fourth and fifth years, $35,000 (the
         'Base Salary')."

         3.       Except as herein expressly amended, the Employment Agreement
shall remain in full force and effect and is hereby ratified and confirmed.

                  IN WITNESS WHEREOF, the parties have executed this First
Amendment to Employment Agreement on the day and year first set forth above.

                                  RAMCO-GERSHENSON PROPERTIES TRUST,

                                  By:   /s/ DENNIS GERSHENSON
                                        --------------------------------------
                                        Dennis Gershenson
                                        Its:   CEO

                                  /s/ BRUCE GERSHENSON
                                  --------------------------------------------
                                  BRUCE GERSHENSON<PAGE>

                                                                     EXHIBIT 4.1

                                 [QUINTON LOGO]

                               QUINTON CARDIOLOGY
                                 SYSTEMS, INC.

         NUMBER                                            SHARES
          QUIN                                          ____________
      COMMON STOCK                           SEE REVERSE FOR CERTAIN DEFINITIONS
                                                      CUSIP 748773 10 8

             INCORPORATED UNDER THE LAWS OF THE STATE OF CALIFORNIA

THIS CERTIFIES THAT

                    ----------------------------------------

IS THE OWNER OF

                    ----------------------------------------

           FULLY PAID AND NONASSESSABLE SHARES OF THE COMMON STOCK OF

                        QUINTON CARDIOLOGY SYSTEMS, INC.

transferable on the books of the Corporation by the holder hereof in person or
by duly authorized attorney upon surrender of this Certificate properly
endorsed. This Certificate is not valid until countersigned and registered by
the Transfer Agent and Registrar.

[OVERSTAMP: "STATE OF                        [OVERSTAMP: "PAR VALUE
  INCORPORATION CHANGED                           CHANGED TO
    TO DELAWARE"]                                   $0.001"]

        WITNESS the facsimile seal of the Corporation and the facsimile
signatures of its duly authorized officers.

Dated:
       -------------------

                                     [SEAL]

/s/ Michael Matysik                               /s/ John R. Hinson
---------------------------                       --------------------------
          SECRETARY                                      PRESIDENT

COUNTERSIGNED AND REGISTERED:
        MELLON INVESTOR SERVICES LLC
             TRANSFER AGENT AND REGISTRAR

BY:
    ------------------------------------
                    AUTHORIZED SIGNATURE

<PAGE>
                        QUINTON CARDIOLOGY SYSTEMS, INC.

        A statement of the powers, designations, preferences and relative,
participating, optional, or other special rights, and the qualifications,
limitations or restrictions of such preferences and/or rights granted to or
imposed upon the respective classes or series of shares and upon the holders
thereof as established, from time to time, by the Articles of Incorporation of
the Corporation and by any certificate of determination, and the number of
shares constituting each class and series and the designations thereof, may be
obtained by the holder hereof upon request and without charge from the
Corporation at its principal office.

        The following abbreviations, when used in the inscription on the face
of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<Table>
        <S>                                            <C>
        TEN COM   --  as tenants in common              UNIF GIFT MIN ACT -- ...................Custodian...............
        TEN ENT   --  as tenants by the entireties                                 (Cust)                    (Minor)
        JT TEN    --  as joint tenants with right of                         under Uniform Gifts to Minors
                      survivorship and not as tenants                        Act........................................
                      in common                                                                 (State)
        COM PROP  --  as community property             UNIF TRF MIN ACT  -- .............Custodian (until age.........)
                                                                                 (Cust)
                                                                             ....................under Uniform Transfers
                                                                                    (Minor)
                                                                             to Minors Act..............................
                                                                                                   (State)
</Table>

    Additional abbreviations may also be used though not in the above list.

        FOR VALUE RECEIVED,___________________________hereby sell, assign and
transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
   IDENTIFYING NUMBER OF ASSIGNEE
--------------------------------------

--------------------------------------

_______________________________________________________________________________
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

_______________________________________________________________________________

_______________________________________________________________________________

________________________________________________________________________ Shares
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

______________________________________________________________________ Attorney
to transfer the said stock on the books of the within named Corporation
with full power of substitution in the premises.

Dated________________________

                                X_______________________________________________

                                X_______________________________________________
                       NOTICE:   THE SIGNATURE(S) TO THIS ASSIGNMENT MUST
                                 CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE
                                 FACE OF THE CERTIFICATE IN EVERY PARTICULAR,
                                 WITHOUT ALTERATION OR ENLARGEMENT OR ANY
                                 CHANGE WHATEVER.

Signature(s) Guaranteed

By___________________________________
THE SIGNATURE(S) SHOULD BE GUARANTEED
BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND
LOAN ASSOCIATIONS AND CREDIT UNIONS
WITH MEMBERSHIP IN AN APPROVED
SIGNATURE GUARANTEE MEDALLION PROGRAM),
PURSUANT TO S.E.C. RULE 17Ad-15.exv10w42

 

Exhibit 10.42

February 26, 2004

Mr. Bo Andersson

Vice President — Worldwide Purchasing

Production Control & Logistics

General Motors Corporation

30009 Van Dyke, MC 480-206-114

Warren, Michigan 48090

Dear Bo:

This letter will confirm our agreement relative to GM’s sourcing of the
following product programs to AAM as the sole-source, exclusive Tier I supplier
and systems integrator for all of GM’s requirements for driveline components,
systems, modules and forged products for each of the following programs, and
all derivatives thereof based on each respective platform, for the life of each
program as set forth below.

	1.	 	[XXXXX]* series program and all derivatives:
	 
	a)	 	GM hereby sources to AAM as set forth above the [XXXXX]* series program
and all derivatives.
	 
	b)	 	Prices for [XXXXX]* series program products, which are carryover from the
[XXXXX]* series program, shall be based on the current prices of the
products being replaced, increased or decreased by the cost of engineering
changes ordered by GM in the specifications for such products.
	 
	c)	 	With respect to potential non-carryover products (e.g., IRDA, Modules),
AAM is hereby designated as the development and productive source for such
content. AAM and GM will work cooperatively to minimize the costs of
these products to the mutual satisfaction of both parties based on an
agreed upon design direction.
	 
	d)	 	AAM will provide the following minimum annual productivity commitments on
AAM content, excluding directed buys, beginning in the second full year of
production at the following rates: [XXXXX].* AAM and GM will work
cooperatively together on joint cost reduction initiatives.
	 
	e)	 	In the event that the [XXXXX]* series program utilizes a module
application, either GM or AAM /GM will jointly source the module
components that AAM elects not to produce.

	*	 	Any text removed pursuant to AAM’s confidential treatment request has been
separately submitted with the U.S. Securities and Exchange Commission and is
marked “[XXXXX]” herein.

1

 

	2.	 	[XXXXXX]* Series Program
	 
	a)	 	GM hereby sources to AAM as set forth above the [XXXXX]* series program
and all derivatives.
	 
	b)	 	Prices for [XXXXX]* series program products, which are carryover from the
[XXXXX]* series program, shall be based on the current prices of the
products being replaced or modified, increased or decreased by the cost of
engineering changes ordered by GM in the specifications for such products.
To avoid uncertainty, as a derivative, any productivity commitments of
AAM for the [XXXXX]* program shall apply to the [XXXXX]* program.
	 
	c)	 	With respect to potential non-carryover products (e.g., IRDA, Modules),
AAM is hereby designated as the development and productive source for such
content. AAM and GM will work cooperatively to minimize the costs of
these products to the mutual satisfaction of both parties based on an
agreed upon design direction.
	 
	d)	 	In the event that the [XXXXX]* series program utilizes a module
application, either GM or AAM /GM will jointly source the module
components that AAM elects not to produce.
	 
	3.	 	[XXXXX]*:
	 
	a)	 	AAM and GM engineering will work cooperatively together to develop an
acceptable design direction for [XXXXX]* for the [XXXXX]* and [XXXXX]*
series programs and all derivatives.
	 
	b)	 	If a mutually acceptable design direction is developed within the next 60
days, then GM shall designate AAM as the exclusive source for the [XXXXX]*
for the [XXXXX]* and [XXXXX]* series programs and all derivatives.
	 
	c)	 	AAM and GM will work cooperatively to minimize the costs of these
products to the mutual satisfaction of both parties based on an agreed
upon design direction.
	 
	4.	 	[XXXXX]* Program
	 
	a)	 	In the event that an acceptable design direction for [XXXXX]* is not
developed within the next 60 days, then GM shall immediately source to AAM
the front axle for the [XXXXX]* program and all derivatives and the front
/rear axle and all modules for the [XXXXX]* program and all derivatives.
	 
	b)	 	Prices for such products shall be based on AAM’s North American quotation
for IRDA (August 1, 2003) and Front Axle (February 12, 2004). AAM and GM
will work cooperatively to minimize the costs of these products to the
mutual satisfaction of both parties based upon an agreed upon design
direction.

	*	 	Any text removed pursuant to AAM’s confidential treatment request has been
separately submitted with the U.S. Securities and Exchange Commission and is
marked “[XXXXX]” herein.

2

 

	5.	 	Lifetime Program Contracts (LPC’s)
	 
	a)	 	All of the products being sourced to AAM by GM pursuant to this agreement
shall be included in AAM’s Lifetime Program Contracts (LPC’s).
	 
	6.	 	Program Cancellation
	 
	a)	 	In the event that any of the above product programs sourced by GM to AAM
are not approved or are canceled, other programs of equivalent value
satisfactory to AAM will be promptly sourced by GM to AAM based on the
same terms and conditions as the parties have previously agreed.
	 
	7.	 	Substitute Business
	 
	a)	 	AAM and GM agree that GM’s $[XXXXX]* Substitute Business sourcing
obligation to AAM is fully satisfied upon the signing of this agreement.

Sincerely,

/s/ Joel D. Robinson

Joel D. Robinson

President & Chief Operating Officer

Acknowledged and Agreed to:

General Motors Corporation

/s/ Bo I. Andersson

Bo I. Andersson

Vice President – Worldwide Purchasing

Production Control & Logistics

	 	 	 
	cc:

	 	G. Briggs – GM
	

	 	A. Ryan – GM
	

	 	D. C. Dauch – AAM

	*	 	Any text removed pursuant to AAM’s confidential treatment request has been
separately submitted with the U.S. Securities and Exchange Commission and is
marked “[XXXXX]” herein.

3

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