I had issues with pulley depths when I pieced mine together with an edlebrock waterpump. I am running the early cover on a roller block, added a pointer, use FMS underdrive crank & alt pulley but the waterpump one was a different depth (no PS on mine). I ended up with a 76 granada waterpump pulley (deeper dish) and although not as shiney as the others it works. The alt needed shimmed different than original as well.