The factory pivot ball, frame side View attachment 1715982686 should look more like this. The picture is belhousing side- your side should have a similar ball and stem, no bracket, but have male threads and nut to bolt to inner fender.
It is just a pivot on a threaded stud. There's also the backing welded to the fender on the tire side. I think with the clip reset and maybe a shim or two, I should be good to go.
