Document:

<PAGE>

                                                                  Execution Copy

                   AMENDMENT No. 2 dated as of March 23, 2001 (this
              "Amendment"), to the Receivables Transfer Agreement referred to
              below among MTSPC, INC.,(the "Transferor"), MASCOTECH, INC. (the
              "Parent"), individually, as Collection Agent and as Guarantor,
              PARK AVENUE RECEIVABLES CORPORATION ("PARCO"), and EIFFEL FUNDING,
              LLC ("Eiffel") (collectively, the "CP Conduit Purchasers"), THE
              CHASE MANHATTAN BANK, as Committed Purchaser and Funding Agent for
              PARCO ("Chase"), CDC FINANCIAL PRODUCTS INC., as Committed
              Purchaser and Funding Agent for Eiffel ("CDC") (collectively, the
              "Committed Purchasers"), and THE CHASE MANHATTAN BANK, as
              Administrative Agent.

         A. The Transferor, the Collection Agent, the Guarantor, PARCO, Chase
and the Administrative Agent have entered into a Receivables Transfer Agreement
dated as of November 28, 2000 (the "Receivables Transfer Agreement").

         B. The Transferor, the Collection Agent, the Guarantor, PARCO, Chase,
Eiffel, CDC and the Administrative Agent have amended the Receivables Transfer
Agreement as of December 15, 2000 (the "First Amendment to the Receivables
Transfer Agreement").

         C. The Transferor has asked to amend certain terms of the Receivables
Transfer Agreement and the Transferor, the Collection Agent, the Guarantor,
PARCO, Chase, Eiffel, CDC and the Administrative Agent are willing, on the terms
and subject to the conditions set forth below, to amend the Receivables Transfer
Agreement as provided herein.

         D. Capitalized terms used and not otherwise defined herein shall have
the meanings assigned to them in the Receivables Transfer Agreement.

         Accordingly, in consideration of the mutual agreements herein contained
and other good and valuable consideration, the sufficiency and receipt of which
are hereby acknowledged, the parties hereto hereby agree as follows:

         SECTION 1. Schedule A of the Receivables Transfer Agreement. (a) The
definition of "Loss and Dilution Reserve Ratio" is hereby amended to read in its
entirety as follows:

<PAGE>

                                                                               2

         "'Loss and Dilution Reserve Ratio' shall mean, on any day, the greater
    of (a) the sum of (i) 16% plus (ii) the product of (x) the average Dilution
    Ratio over the immediately preceding fiscal 12-month period and (y) DSO
    divided by 30 and (b) the sum of the Loss Reserve Ratio plus the Dilution
    Reserve Ratio."

         SECTION 2. Amendments to Schedule C of the Receivables Transfer
Agreement. Schedule C of the Receivables Transfer Agreement is hereby amended to
read in its entirety as set forth in Schedule C attached to this Amendment.

         SECTION 3. GOVERNING LAW. THIS AMENDMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK.

         SECTION 4. Expenses. The Transferor shall pay all out-of-pocket fees
and expenses incurred by the Administrative Agent in connection with the
preparation, negotiation, execution and delivery of this Amendment, including
the fees, disbursements and other charges of Cravath, Swaine & Moore, counsel
for the Administrative Agent.

         SECTION 5. Counterparts. This Amendment may be executed in any number
of counterparts, each of which shall be an original but all of which, when taken
together, shall constitute but one instrument. Delivery of an executed
counterpart of a signature page of this Amendment by fax shall be as effective
as delivery of a manually executed counterpart of this Amendment.

         SECTION 6. Headings. Section headings used herein are for convenience
of reference only, are not part of this Amendment and are not to affect the
construction of, or to be taken into consideration in interpreting, this
Amendment.

         SECTION 7. Effect of Amendment. Except as specifically amended or
modified hereby, the Receivables Transfer Agreement and the First Amendment to
the Receivables Transfer Agreement shall continue in full force and effect in
accordance with the provisions thereof. As used therein, the terms "Agreement",
"herein", "hereunder", "hereinafter", "hereto", "hereof" and words of similar
import shall, unless the context otherwise requires, refer to the Receivables
Transfer Agreement as amended hereby.

<PAGE>

                                                                               3

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed by their respective authorized officers as of the date first above
written.

                               MTSPC, INC., as
                                     Transferor

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                               METALDYNE CORPORATION (f/k/a/ MascoTech, Inc.),
                                     individually, as
                                     Collection Agent and as
                                     Guarantor

                                 by
                                     -------------------------
                                     Name:
                                     Title:

<PAGE>

                                                                               4

                               PARK AVENUE RECEIVABLES
                               CORPORATION, as
                                     CP Conduit Purchaser

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                               THE CHASE MANHATTAN BANK, as
                                     Committed Purchaser for
                                     Park Avenue Receivables
                                     Corporation,

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                               THE CHASE MANHATTAN BANK, as
                                     Funding Agent for Park
                                     Avenue Receivables
                                     Corporation,

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                               THE CHASE MANHATTAN BANK, as
                                     Administrative Agent,

                                 by
                                     -------------------------
                                     Name:
                                     Title:

<PAGE>

                                                                               5

                               EIFFEL FUNDING LLC,
                                     as CP Conduit Purchaser
                               by Global Securitization
                                     Services, LLC, its Manager

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                               CDC FINANCIAL PRODUCTS INC.,
                               as Committed Purchaser for
                               Eiffel Funding, LLC

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                               CDC FINANCIAL PRODUCTS, INC.,
                               as Funding Agent for
                               Eiffel Funding, LLC

                                 by
                                     -------------------------
                                     Name:
                                     Title:

                                 by
                                     -------------------------
                                     Name:
                                     Title:

<PAGE>

                                                                      SCHEDULE C
                          Schedule of Special Obligors

Special Obligor             Percentage Limit     Conditions
-----------------------------------------------------------------------------
New Venture Gear            12.0%                So long as short-term or
                                                 long-term ratings of
                                                 DaimlerChrysler and
                                                 General Motors are at
                                                 least A-2/BBB by S&P and
                                                 at least P-2/Baa2 by
                                                 Moody's, respectively.
-----------------------------------------------------------------------------
General Motors              15.0%                So long as short-term or
Corporation                                      long-term ratings are at
                                                 least A-1/A by S&P and
                                                 at least P-1/A2 by
                                                 Moody's, respectively
-----------------------------------------------------------------------------
Ford Motor Company          20.0%                So long as short-term or
                                                 long-term ratings are at
                                                 least A-1/A by S&P and
                                                 at least P-1/A2 by
                                                 Moody's, respectively.
-----------------------------------------------------------------------------
DaimlerChrysler             15.0%                So long as short-term or
                                                 long-term ratings are at
                                                 least A-1/A by S&P and
                                                 at least P-1/A2 by
                                                 Moody's, respectively.
-----------------------------------------------------------------------------
DaimlerChrysler             10.0%                So long as short-term or
                                                 long-term ratings of
                                                 DaimlerChrysler are at
                                                 least A-2/BBB by S&P and
                                                 at least P-2/Baa2 by
                                                 Moody's, respectively.
-----------------------------------------------------------------------------<PAGE>

                                                                  Execution Copy

                   AMENDMENT No. 3 dated as of June 22, 2001 (this "Amendment"),
              to the Receivables Transfer Agreement referred to below among
              MTSPC, INC.,(the "Transferor"), METALDYNE CORPORATION (f/k/a
              MascoTech, Inc.) (the "Parent"), individually, as Collection Agent
              and as Guarantor, PARK AVENUE RECEIVABLES CORPORATION ("PARCO"),
              and EIFFEL FUNDING, LLC ("Eiffel") (collectively, the "CP Conduit
              Purchasers"), THE CHASE MANHATTAN BANK, as Committed Purchaser and
              Funding Agent for PARCO ("Chase"), CDC FINANCIAL PRODUCTS INC., as
              Committed Purchaser and Funding Agent for Eiffel ("CDC")
              (collectively, the "Committed Purchasers"), and THE CHASE
              MANHATTAN BANK, as Administrative Agent.

         A. The Transferor, the Collection Agent, the Guarantor, PARCO, Chase
and the Administrative Agent have entered into a Receivables Transfer Agreement
dated as of November 28, 2000 (the "Receivables Transfer Agreement").

         B. The Transferor, the Collection Agent, the Guarantor, PARCO, Chase,
Eiffel, CDC and the Administrative Agent have amended the Receivables Transfer
Agreement as of December 15, 2000 (the "First Amendment") and as of March 23,
2001 (the "Second Amendment").

         C. The Transferor has asked to amend certain terms of the Receivables
Transfer Agreement and the Transferor, the Collection Agent, the Guarantor,
PARCO, Chase, Eiffel, CDC and the Administrative Agent are willing, on the terms
and subject to the conditions set forth below, to amend the Receivables Transfer
Agreement as provided herein.

         D. Capitalized terms used and not otherwise defined herein shall have
the meanings assigned to them in the Receivables Transfer Agreement.

         Accordingly, in consideration of the mutual agreements herein contained
and other good and valuable consideration, the sufficiency and receipt of which
are hereby acknowledged, the parties hereto hereby agree as follows:

         SECTION 1. Schedule A of the Receivables Transfer Agreement. (a) The
definition of "Receivable" is hereby amended to read in its entirety as follows:

<PAGE>

                                                                               2

         "'Receivable' shall mean, the indebtedness owed to a Seller by an
    Obligor under a Contract and rights of payment and other payment
    obligations, whether consti tuting an account, chattel paper, instrument,
    investment property or general intangible, arising in connection with the
    sale or lease of merchandise or the rendering of services by the Seller, in
    its ordinary course of business and includes the right to payment of any
    Finance Charges and other obligations of such Obligor with respect thereto;
    provided that any obligation of any Person to pay for tooling or equipment
    purchased or built by Lester Precision Die Casting, Inc., DuPage Die Casting
    Corporation and/or Accura Tool and Mold, Inc. for the purpose of
    manufacturing products for such Person, including the right to payment of
    any interest, sales taxes, finance charges, returned check or late charges
    and other obligations of such Person with respect thereto shall not
    constitute a "Receivable". Notwithstanding the foregoing, once a Receivable
    has been deemed collected pursuant to Section 2.10 of the Receivables
    Transfer Agreement, it shall no longer constitute a Receivable under the
    Receivables Transfer Agreement."

         SECTION 2. GOVERNING LAW. THIS AMENDMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK.

         SECTION 3. Expenses. The Transferor shall pay all out-of-pocket fees
and expenses incurred by the Administrative Agent in connection with the
preparation, negotiation, execution and delivery of this Amendment, including
the fees, disbursements and other charges of Cravath, Swaine & Moore, counsel
for the Administrative Agent.

         SECTION 4. Counterparts. This Amendment may be executed in any number
of counterparts, each of which shall be an original but all of which, when taken
together, shall constitute but one instrument. Delivery of an executed
counterpart of a signature page of this Amendment by fax shall be as effective
as delivery of a manually executed counterpart of this Amendment.

         SECTION 5. Headings. Section headings used herein are for convenience
of reference only, are not part of this Amendment and are not to affect the
construction of, or to be taken into consideration in interpreting, this
Amendment.

<PAGE>

                                                                               3

         SECTION 6. Effect of Amendment. Except as specifically amended or
modified hereby, the Receivables Transfer Agreement, as previously amended by
the First Amendment and the Second Amendment, shall continue in full force and
effect in accordance with the provisions thereof. As used therein, the terms
"Agreement", "herein", "hereunder", "hereinafter", "hereto", "hereof" and words
of similar import shall, unless the context otherwise requires, refer to the
Receivables Transfer Agreement as amended hereby.

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed by their respective authorized officers as of the date first above
written.

                                MTSPC, INC., as
                                      Transferor

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                METALDYNE CORPORATION (f/k/a/ MascoTech, Inc.),
                                      individually, as
                                      Collection Agent and as
                                      Guarantor

                                  by
                                      -------------------------
                                      Name:
                                      Title:

<PAGE>

                                                                               4

                                PARK AVENUE RECEIVABLES
                                CORPORATION, as
                                      CP Conduit Purchaser

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                THE CHASE MANHATTAN BANK, as
                                      Committed Purchaser for
                                      Park Avenue Receivables
                                      Corporation,

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                THE CHASE MANHATTAN BANK, as
                                      Funding Agent for Park
                                      Avenue Receivables
                                      Corporation,

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                THE CHASE MANHATTAN BANK, as
                                      Administrative Agent,

                                  by
                                      -------------------------
                                      Name:
                                      Title:

<PAGE>

                                                                               5
                                EIFFEL FUNDING LLC,
                                      as CP Conduit Purchaser
                                by Global Securitization
                                      Services, LLC, its Manager

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                CDC FINANCIAL PRODUCTS INC.,
                                as Committed Purchaser for
                                Eiffel Funding, LLC

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                CDC FINANCIAL PRODUCTS, INC.,
                                as Funding Agent for
                                Eiffel Funding, LLC

                                  by
                                      -------------------------
                                      Name:
                                      Title:

                                  by
                                      -------------------------
                                      Name:
                                      Title:

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