This is the pivot ball I was told that needed to be welded in. I think I am going to go with the four speed conversion and also look into modifying my auto. Thanks View attachment 1716303740
That's a replacement ball stud if the one in your bellhousing bracket is worn out, you grind the old one off and weld the new one in.
The body side ball stud gets bolted through this reinforcement plate, which is normally tack welded to the back side of a lower section of the inner fender well.