Those are the brakes on my C4. All front brakes on '95 and '96 C4 are 13". Only the Grand Sports and Collectors editions got those calipers in '96 because they look better with the ZR1 style wheels, but they all use the same pads. For the Z28 I'm going with the Baer GT+ kit. The calipers are the same PBR's as the C5 with 13.15" 2 piece rotors. The kit uses a caliper braket adapter that will require a little customizing to be done to the spindles.