I want to convert my pop's '68 Cutlass to front discs and I'm looking for clarification. Can I use the drum spindles (bolt boss removed), tall ball joints, 1LE rotors, 68-72 calipers/pads, and 15" wheels? I might be able to scrounge up some 16"s. OR, Use the drum spindles, drum hubs, tall joints, C4 rotors/calipers/pads? Also wondered about the C4 rotor hat thickness and stock studs. Will doner backing plates fit?