There are two stock upper control arms for a body disk brakes. They look nearly identical except the early 66-72 have a smaller ball joint hole diameter.
The original hemi cars had kesley hays four piston calipers, spindles, hardware the same as the 66-72 small bolt pattern Regular production cars...EXCEPT the hemi cars have custom one off rotor/hub assy's with large bolt pattern drilled into them and a larger rim register machined hub.
You could buy a used small bolt disk swap and buy large pattern KH disks from ram man. And see if they look to your liking. Or custom machine and modify small bolt rotors/hubs yourself.
Or you can just run 73-76 a-body disks and upper control arms. Almost all clones do this.
