You might check with a local salvage yard, have them look it up in Hollanders Interchange to see what years will be compatible. I'd have to look, but I'm thinking there was a change in the bushings from all steel to rubber when the '73s came out. There is a possability that the bushings and balljoints are the only difference. I do know the balljoints can be swapped between them.
Another thing you might do is post in the Parts Wanted section, perhaps someone here has the parts you need. The control arm is not available new.
