oh well that's diffrent... get a name brand. Stay away from generic. Something that there's at least someone you can call if you have a problem. It's really something you miss having, once you don't have that company backing behind a product.

you can also compare how it might sound on someone elses car if it's a name brand. If it's generic... you have very very very very very slim chance of anyone near you ever having the exact same generic muffler so you can hear it.