Rob, if you do a search on "pipes" or "exhaust" you'll find enough reading to keep you busy for days. OR, you can search by brand, Epco, Bubs, Specialty Spares, TOR, or others. I have Specialty Spares and like them better than any of the others I've seen and heard. This is a personal thing - you'll find lots opinions where people love what they have. Just about anything is better than stock.
It's not just about the sound, but performance as well.
