If you are looking to convert your car to 964 Brembo Brakes, the two mounting holes are exactly 3-3/4 (3.75) inches from the center of each hole. Please be sure that the part/part# is compatible with your vehicle before purchasing. If you receive an item that was damaged during transit, we cannot be held accountable for the damage incurred upon the item. If such an instance should occur, please understand that we will do our best to rectify the situation that has been presented. Established in 1988, Autobahn is San Diego's premier BMW and Porsche dismantler.Our 10,000+ square foot facility contains a diverse mix of parts from the 70's all the way to the 2000's. If you have any questions/comments please feel free to contact me, Mike. _gsrx_vers_566 GS 6.7.1 (566). The item "Porsche 911 964 C2/C4 (1989-1994) OEM Stock Brembo Rear Brake Calipers" is in sale since Wednesday, October 28, 2015. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Brakes & Brake Parts\Caliper Parts". The seller is "1autobahn1" and is located in El Cajon, California. This item can be shipped worldwide.