Also, use the disc brake hoses for your particular model so everything fits as it should. In the earlier A-Bodies, use hoses from a '73-'76 disc brake A-Body. The pre-'73 A-Bodies may also have a clearance issue between a sway bar and the bigger front-mounted calipers. It may be necessary to mount them to the rear if a big sway bar is used. When buying replacement parts, such as calipers, rotors and bearings and brake pads, use the donor car as your make and model. You may also swap between the two rotor sizes by using the correct caliper brackets.