While installing a centerforce spec 2 clutch I slapped in a new cat-back. Simple to install,great quality s.s. and sounds deep and mean(more like a TJ). I noticed small power increase and its more fun to drive. A lot more ground clearance(no more smashing coffee can). I did trim off a little more for my 2dr. 21-1/4" instead of the 20" the instructions suggested. My ears like its sound over all the other ones, and not just cause its mine,it does sound good. Dual tips are just for looks