I hate chrome and I hate weight so when I decided to put a cat back in my MKIII I just had them weld in a 3 inch pipe with a regular single chamber Magnaflow muffler. This muffler ends up on a lot of resto rods. Anyway it's only slightly louder than stock at partial throttle and low rpms but when I get on it the Magnaflow sounds very deep and throaty around 3k rpm and really shreiks by about 5.5k, best part, no flatulent sound. I've had three or four people tell me that its the best sounding import they've heard.