Here is a pair of uber clean 68-72 GM A-body upper rear control arms for a 12 bolt rear end. I have shown a close up of the rear arm that has the re-inforcement. I had these powder coated in semi gloss black-bushings were professionally removed. They are ready to have new bushing pressed into them-YOU WILL NOT FIND A CLEANER PAIR! $100 Shipped to your door.
Hi John-pm sent -I will take them if they are still available-gm noticed on the drivers side the upper rear control arm was binding on hard acceleration were it attaches to the rear end -they basically cut a piece off the control arm to make room and welded a tab in its place-if you see a car with its original control arms and the drivers side has the welded tab then the car had a 12 bolt from the factory-
Keep on Cruising!
Dave