Anybody know where I can get the studs that mount the upper control arm shafts? The holes in the frame look like they could be oversized from the old bolts spinning, how can I fix this? (66 Chevelle Frame)

Tack weld, if you can't find oversize.
Harley

Hinshaws, OPG, Year One all carry these bolts. Tack weld a new one in and your hoping nothing goes wrong ever again. The best thing, not the cheapest or easiest would be to create a bushing, oversize the hole, and cold shrink the bushing. The bushing having the correct bolt dia. hole in it.
Jody
71SS454

I got mine from the local chevy dealer.