eldirector
Grandmaster
If the exhaust is original, then you might look at just replacing it all. No sense in dealing with rusted/rotten pipes. There are several kits out there, and most decent exhaust shops can drop in whatever muffler you want.
My stainless Dynomax mufflers have taken a real beating with no leaks, and sound great (on my old CJ with a V8). Flowmaster is good too, as is Borla. I'd go a bit "milder" than you might think, just to avoid the terrible droning sound the free-flow mufflers have at highways speeds. My old truck had a Gibson setup that sounded fantastic around town, but was TERRIBLE at highway speeds.
My stainless Dynomax mufflers have taken a real beating with no leaks, and sound great (on my old CJ with a V8). Flowmaster is good too, as is Borla. I'd go a bit "milder" than you might think, just to avoid the terrible droning sound the free-flow mufflers have at highways speeds. My old truck had a Gibson setup that sounded fantastic around town, but was TERRIBLE at highway speeds.