1 EXHIBIT 8.1 June _____, 1997 VIA FEDEX DELIVERY C&S HYBRID, INC. 804 Buckeye Court Milpitas, California 95035 Attention: Board of Directors Re: Closing Tax Opinion for Merger Transaction Involving C&S Hybrid, Inc. and REMEC, Inc. Ladies and Gentlemen: We have been requested to render this opinion concerning certain matters of U.S. federal income tax law in connection with the proposed merger (the "MERGER") involving C&S Hybrid, Inc., a corporation organized and existing under the laws of the State of California ("C&S HYBRID"), REMEC, Inc., a corporation organized and existing under the laws of the State of California ("REMEC") and C&S Acquisition Corporation, a corporation organized and existing under the laws of the State of California and a wholly-owned subsidiary of REMEC ("REMEC SUB"). The Merger is structured as a statutory merger of REMEC Sub with and into C&S Hybrid, with C&S Hybrid surviving the merger and becoming a wholly-owned subsidiary of REMEC pursuant to the applicable corporate laws of the State of California and in accordance with the Agreement and Plan of Reorganization and Merger by and among C&S Hybrid, REMEC and REMEC Sub, dated as of April 10, 1997, and exhibits thereto (collectively, the "AGREEMENT") and the related Agreement of Merger (collectively, the "MERGER AGREEMENTS"). Except as otherwise indicated, capitalized terms used herein have the meanings set forth in the Merger Agreements. All section references, unless otherwise indicated, are to the Internal Revenue Code of 1986, as amended (the "CODE"). We have acted as legal counsel to C&S Hybrid in connection with the Merger. As such, and for the purpose of rendering this opinion, we have examined and are relying upon (without any independent investigation or review thereof) the truth and accuracy, at all relevant times, of the statements, covenants, representations and warranties contained in the following documents (including all schedules and exhibits thereto), among others: 2 1. The Merger Agreements; 2. An Officers' Tax Certificate of REMEC and REMEC Sub dated June _______, 1997, signed by an authorized officer of each of REMEC and REMEC Sub and delivered to us from REMEC and REMEC Sub and incorporated herein by reference; and 3. An Officer's Tax Certificate of C&S Hybrid dated June ________, 1997, signed by an authorized officer of C&S Hybrid and delivered to us from C&S Hybrid and incorporated herein by reference. In addition, we have reviewed such other instruments and documents related to the formation, organization and operation of C&S Hybrid, REMEC and REMEC Sub or the consummation of the Merger and the transactions contemplated thereby as we have deemed necessary or appropriate. In connection with rendering this opinion, we have assumed or obtained representations and are relying thereon (without any independent investigation or review thereof) that: (1) Original documents (including signature) are authentic, documents submitted to us as copies conform to the original documents, and there has been (or will be by the Effective Time) due execution and delivery of all documents where due execution and delivery are prerequisites to the effectiveness thereof; (2) Any representation or statement referred to above made "to the best of knowledge" or otherwise similarly qualified is correct without such qualification; (3) The Merger will be consummated pursuant to the Merger Agreements and will be effective under applicable state law; (4) There is no plan or intention on the part of the C&S Hybrid shareholders to engage in a sale, exchange, transfer, distribution, pledge, disposition or any other transaction which would result in a direct or indirect disposition of (a) shares of REMEC Common Stock to be issued to C&S Hybrid shareholders in the Merger, which shares would have an aggregate fair market value, as of the Effective Time, in excess of 50% of the aggregate fair market value, immediately prior to the Merger, of all outstanding shares of C&S Hybrid stock, or (b) more than 50% of the shares of REMEC Common Stock to be received in exchange for C&S Hybrid Common Stock in the Merger. (5) Following the Merger, C&S Hybrid will continue its historic business or use a significant portion of its historic business assets in a business; (6) To the extent any expenses relating to the Merger (or the "plan of reorganization" within the meaning of Treas. Reg. Section 1.368-1(c) with respect to the Merger) are funded directly or indirectly by a party other than the incurring party, such expenses will be within the guidelines established in Revenue Ruling 73-54, 1973-1 C.B. 187; 2 3 (7) No outstanding indebtedness of C&S Hybrid, REMEC or REMEC Sub has or will represent equity for tax purposes; no outstanding equity of C&S Hybrid, REMEC or REMEC Sub has represented or will represent indebtedness for tax purposes; no outstanding security, instrument, agreement or arrangement that provides for, contains, or represents either a right to acquire REMEC capital stock (or to share in the appreciation thereof) constitutes or will constitute "stock" for purposes of Section 368(c) of the Code; and (8) Neither REMEC nor REMEC Sub is, or will be at the time of the Merger, an investment company as defined in Section 368(a)(2)(F) of the Code. Based on the foregoing documents, materials, assumptions and information, and subject to the qualifications and assumptions set forth herein, we are of the opinion that, if the Merger is consummated in accordance with the Agreement (and without any waiver, breach or amendment of any of the provisions thereof) and the statements set forth in the Officers' Tax Certificates described in the third paragraph hereof are true and correct as of the Effective Time, then for federal income tax purposes, the Merger will qualify as a reorganization within the meaning of Section 368(a) of the Code. Our opinion set forth above is based on the existing provisions of the Code, Treasury Regulations (including Temporary Treasury Regulations) promulgated under the Code, published Revenue Rulings, Revenue Procedures and other announcements of the Internal Revenue Service (the "Service") and existing court decisions, any of which could be changed at any time. Any such changes might be retroactive with respect to transactions entered into prior to the date of such changes and could significantly modify the opinion set forth above. Nevertheless, we undertake no responsibility to advise you of any subsequent developments in the application, operation or interpretation of the U.S. federal income tax laws. Our opinion concerning certain of the U.S. federal tax consequences of the Merger is limited to the specific U.S. federal tax consequence presented above. No opinion is expressed as to any transaction other than the Merger, including any transaction undertaken in connection with the Merger. In addition, this opinion does not address any estate, gift, state, local or foreign tax consequences that may result from the Merger. In particular, we express no opinion regarding: (i) the amount, existence, or availability after the Merger, of any of the U.S. federal income tax attributes of C&S Hybrid or REMEC; (ii) any transaction in which C&S Hybrid Common Stock is acquired or REMEC Common Stock is disposed other than pursuant to the Merger; (iii) the potential application of the "disqualifying disposition" rules of Section 421 of the Code to dispositions of C&S Hybrid Common Stock; (iv) the effects of the Merger and REMEC's assumption of outstanding options to acquire C&S Hybrid stock on the holders of such options under any C&S Hybrid employee stock option or stock purchase plan or REMEC employee stock option or stock purchase plan, respectively; (v) the effects of the Merger on any C&S Hybrid stock acquired by the holder subject to the provision of Section 83(a) of the Code; (vi) the effects of the Merger on any payment which is or may be subject to the provisions of Section 280G of the Code; and (vii) the application of the collapsible corporation provisions of Section 341 of the Code to C&S Hybrid, REMEC or REMEC Sub as a result of the Merger. 3 4 No ruling has been or will be requested from the Service concerning the U.S. federal income tax consequences of the Merger. In reviewing this opinion, you should be aware that the opinion set forth above represents our conclusions regarding the application of existing U.S. federal income tax law to the instant transaction. If the facts vary from those relied upon (including if any representations, covenant, warranty or assumption upon which we have relied is inaccurate, incomplete, breached or ineffective), our opinion contained herein could be inapplicable. You should be aware that an opinion of counsel represents only counsel's best legal judgment, and has no binding effect or official status of any kind, and that no assurance can be given that contrary positions may not be taken by the Service or that a court considering the issues would not hold otherwise. This opinion is being delivered solely for the purpose of satisfying the condition set forth in Section 8.10 of the Agreement. We hereby consent to the filing of this opinion as an exhibit to the Registration Statement filed on Form S-4 with the Securities and Exchange Commission and we further consent to all references to us in the Registration Statement. This opinion may not otherwise be relied upon or utilized for any other purpose or by any other person or entity, and may not be made available to any other person or entity, without our prior written consent. Very truly yours, FENWICK & WEST LLP A LAW PARTNERSHIP INCLUDING PROFESSIONAL CORPORATIONS 4