Heres how I remember it.

I believe the F body (Aspen/Volare) question will get you different answers as I think that was the heated debate between two popular mopar Tech editors. The suspension angles and geometry during suspension travel were the issue. Folks have done it.

The 73 and up A bodies Dart Dart sport Duster and Valiant will all be good donors.
(E bodies will also work, unsure if the upper A arm swaps over)
The upper ball joints are larger in the 73 and up cars with larger brakes. If you have the small pattern than I think you still have the small ball joint? If so the upper A arm is needed