Thanks Olds. You may not be an expert, as you say, but you gave me exactly the expert information that was needed. Haha. You have confirmed I have the correct flywheel with the 5-3/4" center and the 6" spaced disk rivets on the clutch. I like your wagon mod and great as a last resort, but I'm hoping to keep it stock. I replaced anything worn so tolerances should be good. The only oddity I see is when I put a straight edge across the new 11" Pontiac clutch disk rivets, the rivets are -definitely- 15 thou higher than the disk surface. This is the similar for both the troublesome 12" and my new 11". It almost seems the rivets were meant to ride on the flywheel. -To keep the disk wear down to a minimum? Smoother transition? It may be a good thing I discovered that the 12" rivets were wearing on the inner edge of the flywheel depression as that is definitely not correct! Someone please tell me the rivets are meant to rub on the flywheel! Haha. There must be some science there I'm not aware of. I just want to drive this 69 bird after 33 years in my garage(s)! Hoping not to make it 34. Thanks again.
