i just traded an 04 gt with a kenne bell sc for an 04 cobra and i had bbk shorties, pypes o/r x, and slp cat back....i still have never heard a mustang louder than mine. SLP is the way to go with a cat back if you want "LOUD", any x is good as long as its an off road x. headers make a world of difference too.
American Muscle.com
i like it too, I have magnaflow magnapack and Mac Prochamber O/R... it soun ds looooooooooooooooooud :)
hahahaha you're a gamer geek.