I have a 68 conv. with 4 wheel drum brakes and a parts car that is a 74 camaro. I know that I can't switch everything because the camaro is front steer and the firebird rear steer. But can I use the power assist, master cylinder, proportioning valve and calipers and buy different spindles? If so what else would I need. Any help greatly appreciated.

Read this info on the mailing list about front disc's/14" rally's and thought it would help you with your question... so here you go! Good luck, Brett!

Pontiac offered disc brakes from 1967 on. For a correct-for-year conversion would require the 4-piston fixed-position calipers, but the more roadworthy way to go is the 1969 Firebird/Camaro single-piston sliding caliper system. The same components were used on LeMans, GTO, Grand Prix, Cutlass, 442, Skylark, GS, and Chevelle from
'69 through '72 (these are A-body cars); and a few Nova cars (X-body) from '69 to probably '74.

The best trick is to get the spindles, calipers and rotors plus the brake hose brackets from any of these cars from a boneyard or swapmeet.
Then get a new master cylinder and combination valve from the '71-'72
A-body cars. Trade up your core calipers for loaded calipers from your
favorite parts store, plus new 69 Firebird/Camaro front brake hoses. Get
the rotors turned, or replace with new; get new steel lines from the
vintage car suppliers to accomodate the 71-72 set-up, and build your
system.

With it, you can have your clean stopping power and still fit most 14 X
6 and 14 X 7 Rallye II wheels on the car (there were a couple of wheel
codes stated to be incompatible with discs). I'm not so sure whether
Rallye I's will fit, but they sure look great on a 67 or 68 Firebird!
This group collectively can help you with the correct wheel codes.

[This message has been edited by 1stgenbirdman (edited June 04, 2001).]