Aftermarket part rant

Moog parts are not a safe bet anymore. Before you buy new control arms, you might want to try using Proforged ball joints or bushings. Cheaper than new UCA’s anyway. Several members have had issues recently with Moog parts, especially recently produced stuff. Seems as though they changed production or quality control recently.

As for the ball joints, have you used the socket you have on the 73+ ball joints before? There are multiple ball joint socket sizes, the earlier small ball joints use a different socket than the large ball joints.