65 CUDA suspension help

If your 200s are 5 on 4-1/2 you will need to use the 73 up disc A or E brake conversion. Search on here as it has been discussed many times. You will also need to find a way to get 4-1/2 in bolt circle on the rear. Easiest way is to swap an 8-1/4 rear with large pattern. You could also go 8-3/4 with large bolt pattern axles or redrilled axles. Larger torsion bars can make it handle quite well and a sway bar will contribute as well.