The point of the picture I posted is that those were all custom built parts. I built the hub in the picture to fit a C-body spindle. I could just as easily build a hub to fit an Imperial spindle. All I would need to do is change a few dimensions for the bearings and hit the go button. Same thing with the caliper adapter. Just figure out where the centerline of the rotor is, check the bolt pattern on the knuckle and carve out the adapter. Changing the bolt pattern on the hub takes 60 seconds on the CAD system. Want to use a Porsche caliper rather than a Viper caliper, fine. Change the bolt pattern, raise the caliper adapter and you're finished.