Drums to disk swap, small to big rotors ?'s

dgc333 said
I am not aware that the piston bore was different. If you look up the part numbers between the 75 A-body and 79 B body they are different but the 79 Aspen/Volare which has the same diameter rotor as the A-body uses the same caliper as the 79 B body which would suggest that other than a running manufacturing difference they are the same.

All the 73-8x RWD cars used the slider type caliper. The pin type was used before and after that time frame.

Ya know...yesterday, I was talking to a MoPar guy that has 2 Dusters (A 71 and 73) He's the manager at the AutoZone. He found part numbers to be the same on the B and A body calipers in question. I would gather from there that the diameters would be the same.