i cant stop thinking hes talking about the cat to res gasket, not the dp to manifold. that would be closest to the cat.

and if thats the case, just buy 2 new nuts and bolts, try to unbolt them if they break who cares or if they strip the heads off cut the old ones off, the gasket costs 8 bucks and your done. bolts and nuts $1 at the hardware store. could be a $10 fix.....