What kind of a muffler do you want?
Glass pack
regular muffler
Straight pipe.
Glass pack and regular muffler can be gotten at one of the motorcycle supply stores, like J C Whitney or J&P Cycles.
Straight pipe, go to your friendly muffler shack, one that does custom pipes and etc. Have them fit you with a custom bent pipe that ends up straight out once it is fastened to the header.
NOW, I will not be responsible for any citations you get on the glass pack or the straight pipes.
I have a buddy here in town who built the pipes for our race car, my Chevy Trike, and I built the crossover on MGM.

Here is the exhaust on MGM, mucho torque on this one. 4" to 3" muffler to 4" turnout, weed burner, or whatever ya wish to call it. PS, both muffler and tip have been Powder Coated.

Well crapola, this one above hadn't been to the powder coater yet.
Try again.
The brass colored 3" strap is actually a chrome muffler band. It only looks like that in pictures out of my camera. It is not too color coordinated.
