1973 to 1976 upper a arms

niceolddart said
What should be measured on the ball joint? Threaded portion? If so, what should it be for large ones. My ball joint socket also fit my 95 Dakota.

the square top- land-to-land

1-59/64" is the big joint, and the size of the special socket. sometimes a 1-7/8" std socket can work (they call it 1-7/8" square)

1.809" is the small joint