Was ordered and fitted to a 1997 Jeep Wrangler TJ with a 4.0 liter 6 cylinder engine. I decided to apply some high temp paint before installing to extend the life and also to dull the very reflective surface of the stock. The installation was easy, I also replaced the exhaust pipe right away. It's designed to be clamped, but I chose to weld it on for a full seal and extra strength. After installing it, I didn't feel like it was much louder than the stock muffler I removed. There's a slightly deeper and "rougher" sound that I really like. In my opinion it's probably as good as you can get a 6 cylinder sound and for the price I got from Revain Warehouse I really couldn't go wrong. It arrived with a damaged original box just like they said and saved me about $17 with it, well worth it!