Thats because most people buy mufflers for sound...............Ive ran 4 different setups on this car and the american thunder's are one of the loudest(with a good tone)with a off road H. But exhaust sounds different to everyone so its your choice.

 

I'm running the Flowmaster Hushpower II mufflers on my 05' GT and I would not trade them for anything. I have the stock H- pipe. They have a loud but smooth glasspack sound only when you get on it, very mellow at high speeds, and quit when crusin. I will try to post a sound clip, Iwould love to here with off road pipe....

 

i'd say stingers, for real, they're just so damn pimp, but then again the SLP's sound so siiick with the stock H, all about your judgement....