MC - 87 Avanti - Bendix # 11646 from a 1969-71 full size Ford (MAR 2003) MC - 87 Avanti - Bendix #11642 This is for a 67 Ford Fairlane 500 with front disc brakes with the 390 engine. I just replaced mine on the 87 Avanti and it was an exact match. Jun 2005 (dgreene944@aol.com) MC - 87 Avanti - NAPA Part #36277 and is a perfect match. (Keith Brooks May 02) On the other hand... It should be easy to tell if the master cylinder is from an 87 Monte Carlo. It would be an aluminum master cylinder with a plastic reservoir. Cardone PN 10-1926 or Wagner PN F107050. My '87 Avanti uses A Monte Carlo master cylinder. Good luck Jim Wood