The upper ball joints are the same as everything later that used the larger ball joint, so that's good. The lowers are different, and don't know if I should try the A-Body spindles or the taller B-Body ones. It's so different under there. The torsion adjuster is in back, not in the control arm. The upper control arm attaches to the crossmember, not the fender well. The shock is like 10" long and mounts inside a tube welded to the crossmember. There's almost no steering column. The steering box is right against the firewall. With all that, I don't see anything that would stop newer discs from bolting up. I don't know about anything unforeseen like geometry changes, bumpsteer, things like that.