I have a Hooker 2.5" catback and it uses what I believe are turbo mufflers. I've always loved the sound of the ATR Pitbulls, but never new until recently what made them so different. I've heard the Pypes mufflers and Magnaflows. They sound good, but not what I was hoping for. Check out this pic I found of the inside of the Pitbull. Does anyone else have anything similar? I'm half tempted to make my own.