A really good site to find out info would be to go over to dootalk.com and go look in the XR forum. You will find thousands of opinions on what to run for an exhaust. Many do run the MBRP can as sofa king mentioned. I made my own with the help of a buddy. We ordered a muffler that measured the size and fabricated it up. Sounds really nice, not loud and its got a nice throaty sound not to mention the weight savings. Many options out there.
