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                                                                    EXHIBIT 10.5

                              AMENDMENT NUMBER ONE
                                     TO THE
                         TOREADOR RESOURCES CORPORATION
                             2002 STOCK OPTION PLAN

         THIS AMENDMENT NUMBER ONE TO THE TOREADOR RESOURCES CORPORATION 2002
STOCK OPTION PLAN (this "Amendment"), dated as of May 30, 2002 is made and
entered into by Toreador Resources Corporation, a Delaware corporation (the
"Company"). Terms used in this Amendment with initial capital letters that are
not otherwise defined herein shall have the meanings ascribed to such terms in
the Toreador Resources Corporation 2002 Stock Option Plan (the "Plan").

                                    RECITALS

WHEREAS, Article VIII of the Plan provides that the Board of Directors of the
Company (the "Board") may amend the Plan at any time; and

WHEREAS, the Board desires to amend the Plan to more clearly reflect its
original intent to grant Nonemployee Directors of the Corporation or its
affiliates automatic stock options under one stock option plan; and

NOW, THEREFORE, in accordance with Article VIII of the Plan, the Company hereby
amends the Plan as follows:

1. Article IV of the Plan is hereby amended effective May 30, 2002 by deleting
said Article in its entirety and substituting in lieu thereof the following:

                  4.1 Eligibility. The Committee shall, from time to time,
         select the particular officers, key employees, and key consultants of
         the Corporation and its Affiliates to whom the Stock Options are to be
         granted and/or distributed in recognition of each such Participant's
         contribution to the Corporation's or the Affiliate's success.
         Nonemployee Directors who do not elect to decline to participate
         pursuant to the following sentence will be eligible to receive Stock
         Options as provided in Section 4.2 of this Plan, unless such
         Nonemployee Directors receive similar Stock Options pursuant to another
         stock option plan of the Corporation or its Affiliates. A director
         otherwise eligible to participate in the Plan may make an irrevocable,
         one-time election, by written notice to the Committee within ten (10)
         days after his or her initial election to the Board, to decline to
         participate in the Plan.

                  4.2 Grant of Stock Options. All grants of Stock Options under
         this Article IV shall be awarded by the Committee. Each grant of Stock
         Options shall be evidenced by an Option Agreement setting forth the
         total number of shares subject to the Stock Option, the option exercise
         price, the term of the Stock Option, the vesting schedule, and such
         other terms and provisions as are approved by the Committee, but,
         except to the extent permitted herein, are not inconsistent with the
         Plan. In the case of an Incentive Stock Option, the Option Agreement
         shall also include provisions that may be necessary to assure that the
         option is an Incentive Stock Option under the Code. The Corporation
         shall execute Option Agreements upon instructions from the Committee.
         Any

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         Nonemployee Director who does not, in accordance with Section 4.1,
         decline to participate and does not receive a similar Stock Option
         pursuant to another stock option plan of the Corporation or its
         Affiliates shall, on the date that is ten (10) days after his or her
         initial election as a director of the Corporation, automatically be
         granted a Stock Option to purchase 10,000 shares of Common Stock, as
         adjusted in accordance with Article XI. Any Nonemployee Director who
         does not, in accordance with Section 4.1, decline to participate and
         does not receive a similar Stock Option pursuant to another stock
         option plan of the Corporation or its Affiliates shall, on the date
         that is ten (10) days after an annual meeting of the Company,
         automatically be granted a Stock Option to purchase 10,000 shares of
         Common Stock, as adjusted in accordance with Article XI. The options
         will be granted at fair market value on the grant date and become
         exercisable, subject to certain conditions, in three (3) equal annual
         installments on the first three (3) anniversaries of the grant date and
         terminate ten (10) years from the grant date unless terminated sooner
         as a result of the death or termination of directorship of the holder
         thereof. If, on the Date of Grant of a Stock Option to a Nonemployee
         Director, fewer shares of Common Stock remain available for grant than
         are necessary to permit the grant of Stock Options to each person
         entitled to receive a Stock Option, then a Stock Option covering an
         equal number of whole shares of Common Stock, up to 10,000 shares,
         shall be granted to each Nonemployee Director who has not previously
         been granted a Stock Option.

                  4.3 Exercise Price. The exercise price for a Nonqualified
         Stock Option shall not be less than the Fair Market Value per share of
         the Common Stock on the Date of Grant. Subject to the terms of Section
         5.1 hereof, the exercise price for an Incentive Stock Option shall be
         equal to the Fair Market Value per share of the Common Stock on the
         Date of Grant. Notwithstanding anything to the contrary contained in
         this Section 4.3, the exercise price of each Stock Option granted
         pursuant to the Plan shall not be less than the par value per share of
         the Common Stock.

                  4.4 Option Period. The option period will begin and terminate
         on the respective dates specified by the Committee, but may not
         terminate later than ten (10) years from the Date of Grant. No Stock
         Option granted under the Plan may be exercised at any time after the
         expiration of its option period. The Committee may provide for the
         vesting and exercise of Stock Options in installments and upon such
         terms, conditions and restrictions as it may determine. In addition to
         the provisions contained elsewhere herein concerning automatic
         acceleration of unmatured installments of Stock Options, the Committee
         shall have the right to accelerate the time at which any Stock Option
         granted to a Participant shall become vested, or exercisable.

                           [Signature Page to Follow]

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IN WITNESS WHEREOF, the Company has caused this Amendment to be duly executed as
of the date first written above, by its Chief Executive Officer and Secretary
pursuant to prior action taken by the Board.

                                        TOREADOR RESOURCES CORPORATION

                                        By:     /s/ G. Thomas Graves III
                                                --------------------------------
                                        Name:   G. Thomas Graves III
                                        Title:  President and CEO

Attest:

/s/ Gerry Cargile
-----------------------------

                                       3<PAGE>
                                                                   EXHIBIT 4.12

                                                                 EXECUTION COPY

                           FOURTH AMENDMENT AND WAIVER

     FOURTH AMENDMENT AND WAIVER, dated as of May 29, 2002 (this "Amendment"),
with respect to the Credit Agreement, dated as of March 29, 2000, as amended by
the First Amendment dated as of April 23, 2001, the Second Amendment dated as of
June 28, 2001 and the Third Amendment dated as of March 29, 2002 (the "Credit
Agreement"), among VIASYSTEMS GROUP, INC., VIASYSTEMS, INC. (the "US Borrower"),
VIASYSTEMS CANADA HOLDINGS, INC. (f/k/a VIASYSTEMS CANADA, INC.), PRINT SERVICE
HOLDING N.V., the several banks and other financial institutions from time to
time parties thereto (the "Lenders"), J.P. MORGAN BANK CANADA, as Canadian
administrative agent, J.P. MORGAN EUROPE LIMITED, as the multicurrency
administrative agent, and JPMORGAN CHASE BANK, as administrative agent for the
Lenders (in such capacity, the "Administrative Agent").

                                   WITNESSETH:

     WHEREAS, pursuant to the Credit Agreement, the Lenders have agreed to make,
and have made, certain loans and other extensions of credit to the Borrowers;
and

     WHEREAS, the Borrowers have requested, and upon the effectiveness of this
Amendment, the parties hereto have agreed, to waive certain Defaults and Events
of Default under the Credit Agreement upon the terms and conditions set forth
below;

     NOW, THEREFORE, in consideration of the premises and of the mutual
agreements herein contained, the parties hereto hereby agree as follows:

     SECTION 1. Defined Terms. Terms defined in the Credit Agreement and used
herein shall have the meanings given to them in the Credit Agreement. Unless
otherwise indicated, all Section and subsection references are to the Credit
Agreement.

     SECTION 2. Amendment. Subsection 13.4 of the Credit Agreement is hereby
amended by adding thereto the following paragraph (h):

          (h) an unsecured guarantee by Holdings of the Senior Subordinated
     Indebtedness, provided, however, that such guarantee (i) shall contain
     subordination provisions substantially similar to the subordination
     provisions of the Senior Subordinated Indebtedness and have such other
     terms and conditions as shall be reasonably satisfactory to the
     Administrative Agent and (ii) shall not be issued more than one Business
     Day prior to the date on which a disclosure statement is sent to the
     holders of the Senior Subordinated Indebtedness in connection with a
     proposed restructuring thereof.

     SECTION 3. Waiver. The parties hereto hereby agree that, until the earliest
of (a) August 29, 2002, (b) the date on which the US Borrower delivers to the
Administrative Agent a notice of any payment of interest in respect of the
Senior Subordinated Indebtedness, (c) the date on which any payment of such
interest is made, (d) the date on which the US Borrower delivers to the
Administrative Agent a notice of any payment in respect of its obligations to
the Department of Trade and Industry ("DTI") of the United Kingdom and (e) the
date on which any such payment is made to DTI (such earliest date, the "Waiver
Expiration Date"), no Default or Event of Default shall be deemed to have
occurred under the Credit Agreement as a result of any default (each a
"Specified Default") (i) in the observance of the covenants contained in
subsection 12.1(a) (with respect to the requirement that the financial
statements furnished thereunder be reported on by independent certified public
accountants without a "going concern" or like qualification or exception), 12.3
(due to the failure to pay principal or interest in respect of obligations to
the DTI or interest on the Senior Subordinated Indebtedness) or 13.1 or (ii)

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pursuant to subsection 14(e) due to the failure to pay principal or interest in
respect of obligations to the DTI or interest on the Senior Subordinated
Indebtedness (unless any remedial action is taken as a result of such failure to
pay interest on the Senior Subordinated Indebtedness). It is understood that an
Event of Default as a result of any such Specified Default shall be deemed to
have occurred and be continuing on and after the Waiver Expiration Date unless
and until such Event of Default shall have been waived by the Required Lenders
in accordance with subsection 17.1. The parties hereto further agree that, until
the Waiver Expiration Date, no representation or warranty set forth in
subsections 10.2, 10.7 and 10.20 shall be required to be made pursuant to
subsection 11.2(a).

     SECTION 4. Notice of Payment In Respect of Senior Subordinated Indebtedness
and DTI Obligations. The US Borrower hereby agrees to give the Administrative
Agent at least three Business Days' prior written notice of (i) any payment of
interest in respect of the Senior Subordinated Indebtedness and (ii) any payment
in respect of its obligations to DTI. The failure to give any such notice shall
constitute an Event of Default under the Credit Agreement.

     SECTION 5. Representations and Warranties. After giving effect to this
Amendment, Holdings and the US Borrower (and each Foreign Subsidiary Borrower,
only as to itself and its Subsidiaries) hereby confirm, reaffirm and restate
that the representations and warranties set forth in Section 10 of the Credit
Agreement (other than subsections 10.2, 10.7 and 10.20) are true and correct in
all material respects as if made on and as of the date hereof except for any
representation or warranty made as of the earlier date, which representation or
warranty shall have been true and correct in all material respects as of such
earlier date.

     SECTION 6. Conditions to Effectiveness. This Amendment shall become
effective upon receipt by the Administrative Agent of:

     (a) Amendment to Credit Agreement. Counterparts of this Amendment, duly
     executed and delivered by Holdings, the US Borrower and the Foreign
     Subsidiary Borrowers.

     (b) Lender Consent Letters. Lender Consent Letters (or facsimile
     transmissions thereof) in the form of Exhibit A, duly executed and
     delivered by the Required Lenders consenting to the execution of this
     Amendment by the Administrative Agent.

     (c) Fee. An amendment fee, for the account of the Lenders that have
     delivered an executed Lender Consent Letter to the Administrative Agent or
     its counsel no later than 5:00 p.m., New York City time, on May 24, 2002,
     in an amount equal to 0.125% of the aggregate amount of the Commitments in
     effect and Term Loans outstanding of such Lenders. The fees payable
     hereunder to any Lender will be credited against any restructuring fee
     payable to such Lender upon the completion of the restructuring of Holdings
     and its Subsidiaries.

     (d) Additional Information. All financial and other information that has
     been requested by FTI/Policano & Manzo prior to the date hereof.

     (e) Expenses. Payment of all accrued amounts owing to the Administrative
     Agent pursuant to subsection 17.5 of the Credit Agreement.

     SECTION 7. Continuing Effect of Credit Agreement. Except as expressly
amended herein, the Credit Agreement shall continue to be, and shall remain, in
full force and effect in accordance with its terms.

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     SECTION 8. Governing Law; Counterparts. THIS AMENDMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES HERETO SHALL BE GOVERNED BY, AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. This
Amendment may be executed by the parties hereto in any number of separate
counterparts, and all of said counterparts taken together shall be deemed to
constitute one and the same instrument. The execution and delivery of a Lender
Consent Letter by any Lender shall be binding upon each of its successors and
assigns (including Transferees of its commitments and Loans in whole or in part
prior to effectiveness hereof) and binding in respect of all of its commitments
and Loans, including any acquired subsequent to its execution and delivery
hereof and prior to the effectiveness hereof.

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

                                      VIASYSTEMS GROUP, INC.,
                                      as Guarantor

                                      By:
                                         --------------------------------------
                                      Name:
                                      Title:

                                      VIASYSTEMS, INC.,
                                        as US Borrower

                                      By:
                                         --------------------------------------
                                      Name:
                                      Title:

                                      VIASYSTEMS CANADA HOLDINGS, INC.,
                                        as Canadian Borrower

                                      By:
                                         --------------------------------------
                                      Name:
                                      Title:

                                      PRINT SERVICE HOLDING N.V.,
                                        as a Foreign Subsidiary Borrower

                                      By:
                                         --------------------------------------
                                      Name:
                                      Title:

                                      JPMORGAN CHASE BANK,
                                        as Administrative Agent and Collateral
                                        Agent

                                      By:
                                         --------------------------------------
                                      Name:
                                      Title:

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