yeah the 83 must be different, I was (indeed after much swearing) able to access the bolts without taking the heat shield off, I just used a 10inch extension and a mirror to see them. They came off ok once I found them. THere are notches in the heatshield on the 83 that allow the extension to go through. Heatshield would have been horribly difficult to get off anyway. I could see that after I got the manifold off. Problem now is I broke an easy out in the stud of the outer exhaust manifold bolt.(The main reason, beside gasket replacement, why I took the manifold off to begin with was the two outer bolts were sheared off) I can't remove it now and am wondering if I can get by with just replacing the gasket and not worrying about the mess on the outer bolt?