I put in a Pypes x pipe. Not to bad to fitments at all. I really had no issues with it. i had it done in about a hour or so. I love the smell. Yum. I'd imagine alot of people hate the odor gas unburned gasoline. Well good for them. So I would like to pick up a cat back now. Does anyone have any opinions on a cat back with the pypes x pipe? I love drown so with that said it shoots SLP out of the door. I was thinking Mac or American Thunder 40's cat back. I did make my own MIL eliminators though, so those of you looking to buy them dont wast your 50-60 bucks on someone elses labor. I costed me 5.35 at Radio Shack an a 6 npack of beer while watching the foot ball game. Time to build 30 min. I have a very good site I found for these.