My recommendation is to leave it stock, if everything is straight. I have Global west uppers and lowers on my 68. Everything was so worn and bent up there I used them to get the alignment I wanted. I like them with the adjustable coil overs. BUT. Beware that they don't have steering stops so the tire can rub at full turn. The bump stops are in the wrong positions. I had to weld some stops on the frame to match the stops on the arms. Made for Nova, I think, and flogged as Firebird. I talked to Global west about them, they didn't seem to give a sht.