Are all upper control arms the same if they have the big ball joint?

All A-body upper control arms came with the small ball joint through 72. Starting in 73 they went to the same larger ball joint used in B, C and E bodies.

The 9" and 10" drum spindles are differnt I believe the 67-72 KH disk brakes used the same spindle as the 10" drum. Starting in 73 you either had 9" drums or disk brakes, the 10" drums went away. The 73+ spindles are unique.