Which Exhaust Gasket?
 

I have an 05 SS Monte S/C with quite a few mods including Pace Setter headers from here:
Pacesetter - Pacesetter Headers #

I just blew out my exhaust gasket and it darn near sounds like I have open headers :o It was a bit noisy on the ride home...

Has anyone done copper exhaust gaskets? (I've done that on my BB V8 without any problems...) Graphite?? Any other recommendations?

stock exhaust gaskets work great. have never heard of issues with them. if your worried spray them with copper RTV spray