What year A-body? What brakes? It makes a difference.
Basically, you’ll use the spindles and everything “out” from there. No changes to tie rods, lower control arms etc.
67-72 A’s used small ball joint UCA’s, E-bodies used large balljoints like the 73-76 A-bodies. So, you either have to use 73-76 a-body UCA’s, or ball joint adaptors from doctordiff.
Depending on what A-body brake set up you have, you will likely need lower ball joints as well. Again, just use a 73-76 A-body disk car for a source.
Finally, ‘70-72 e-body disks aren’t really a good choice. They’re different from the 73+ brakes that were basically uniform across all the platforms. The spindles look basically the same, but the wheel bearing diameters are different, and so the rotors are too. You can buy bearing adapters for the 70-72 E spindles, also from doctordiff, to use the 73+ rotors, which are the same diameter/thickness etc, but are a lot cheaper than the 70-72 rotors. The calipers and brackets used are the same as the 73+ e-body brakes, although those will all be pin type calipers and brackets. A-bodies used slider type brackets and calipers, but that’s not a problem really, you just have to source the replacement parts correctly.
There are a TON of threads here on brake swaps, you should do a search and see more of what’s involved.
