Are the brake calipers for a 1968 GT500 unique to the car or should I turn them in as a core for rebuilding for others?
Lauran
Originals have fomoco cast in them and even when installed if u know where to look can be seen so I would have the originals rebuilt.
They are not unique, but they are probably dated (cast) and have a Ford logo, the new ones are not likely to have.
Pay the core charge and save them.
Unless pitted, the '68 calipers are very easy to rebuild. I disassembled mine, masked the bore, vapor blasted, powder coated and reassembled. If like me prone to high pressure wash rotors calipers, spindle and control arms prior to detailing. DOT 3 being hygroscopic will attract and hold moisture pushed past the boot seal. When reassembling use ample, silicon assembly grease to protect the bore and piston.