The title is deceptive. I'm trying to swap front brake rotors and hubs from a second-generation Camaro to a Datsun Z. The hub diameter (inner and outer bearing race race diameters) is the same. The only notable difference is the fillet radius of the hub, which means that the grease-seal will be different. Does anyone have advice on standard grease-seal geometries... fillet radii and diameters? Presumably there is some standardization across the auto industry, both domestic and foreign. If I can solve the grease-seal fitment issue, then that opens up a good source of front brakes and 5-lug rotor swaps for Datsuns, as the Camaro aftermarket is huge.