Check out TORQUETECH, And IMHO, stay away from chamberd type mufflers.... If you want H.P. try Dynomax welded, Magnaflow, or Straightline Performance... All of these mufflers make more power, and in my opinion sound WAY better than the tin can sound of Flowmaster.... You wouldn't put "wedges" in your intake runners, would you ? Why on earth would you want them in your exhaust ???????

 

Ok, I'll look at those Mufflers as well.

I think I'm going with Mufflex's Exhaust. They just came out with a 3" systems for '67-'81's. I love thier Systems and if I want them to install it, they're only about 30 minutes away.

http://www.mufflex-performance.com/whats_new.html