they are all parts bin shit
you honestly think they change much dimensionally?
fuck man id be using previous component cad drawings for tons of crap since it'll save $0.009 per car
so we can take GA brakes and put em on the W body, 3 different W body brakes, caddy "13" inch brakes fit, Fbody brakes fit, C5/c6 shit fits.
they all use the same hub bearing for the FWD's same hubs on the rwd variants, slight different patterns but all rotors have oversized holes since they all have the same register bore dia.
this lets them make test mules quite easily for many components
you could put grandam brakes on a corvette
what makes you think youll have a problem