heres a story of how poo they really are, i had mine put on monday, spent 520 bucks on the whole set up, including modifying the front pipe to suit it, 3 days later, its coming off to make way for a one peice front/dump pipe costing me another 550 bucks.
dont get it mate, you will find it willl leak a hell of alot through the screamer itself, and sound like a tractor.
do it right the first time round and get a 3 inch turbo back