so you are sayign tha ti can use the upper control, spinals and lower controls off an a body as long as i get the large joint?
Yup
1. Upper Control Arms, from 1973-1976 A-Body Disc Brake Car. (single Piston Caliper only) The upper control arms are needed because the A-bodies were upgraded to the bigger B-body balljoints in 73, which means you need the later a-body arms to get the bigger balljoint. You can see the balljoint differences on the
Steering Linkage Page
2. Spindles from 73-up A,B,E,F,J,M,R chassis disk brake car. Drum spindles don't work.
Note - the B,F,J,M,R spindle does have differences...
Read A vs. B spindles for more info
3. Rotors and calipers - A-body rotors were 11" and were also used on many other cars. Some 77-79 B and 79-81 R bodies used an 11.75" rotor. Both rotors fit all spindles above. You do however need to use the caliper bracket that matches the rotor diameter. There are pin-type calipers and sliding calipers. The correct one must be used with the corresponding bracket. Most likely you'll find all your parts together on one car. The less-desirable pin-type calipers were used on the E-bodies, while most other cars had the slider style calipers.
4. Divider block and prop valve from a donor disc brake car.
5. New Front Brake Hoses (Rubber)
6. New Brake Pads & Bearings (you must know what make, model and year of the donor car)
7. New Master Cylinder, Disc & drum, use 73-76 A-Body, with or w/o power brakes
8. 4.5" bolt pattern front wheels.
9. New Upper Control Arm Bushings recommended
10. 73-76 Lower Ball Joints are necessary. The stock lower control arms can be retained.
11. From the donor car, remove the (2) lines that are attached to the master cylinder, and use them on
your car. it just easier to use these lines than to bend up your existing ones to work.
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