Is there a website that gives you a demo of an exhaust systems sound?
Try youtube or google videos. Guys are always making videos of their car doing this and that, and a lot will put the muffler brand in their description. You can type the make and model of your car along with the various brand names of mufflers (one at a time) into the search, and I bet you find a match. Then favorite the ones you like and keep narrowing it down.
