I just ordered a PowerCore J-spec muffler from Land Speed Racing. I bought it because the exhaust I have was 2 loud and this has a silencer. That and the gutts of the AirMass(flowtech)Muffler blew out on me. I paid about $500 dollars for my airmass cat back just over a year ago and it's toast already POS! I just wanted to write this up to warn you guts about Airmass and tell you how good the guys at Land speed are. They hooked me up real well so I feel like I should let you know they are a good parts dealer and I'll keep doing business w/ them.
I just found out That some times you still dont get what you pay for!!!!