by dave-r » 27 Mar 2001 9:29
I think the spindles are different on the disc cars. So you will need the spindles, caliper adaptors, calipers, discs, master cylinder from a disc braked donor 1970-72 E-body.
However.
The 1970-72 disc brakes were not that hot. Chrysler was having problems with them. The two piece rotors could warp under heavy use with metalic pads and the inner bearing gave trouble on occasion too.
In 1973-74 they changed the design to a one-piece rotor with a larger inner bearing. I would use those parts if I were you. You can also find the same parts on any 73-76 disc braked A-bodies.
This swap also allows you to use the larger 11.75" rotors if you want but you will have to use 15" wheels with these.
I have put up some scans of this swap as covered in MOPAR ACTION MAGAZINE in another message thread.
I hope this helped some.