I'm looking at getting new exhaust for my GT around christmas time...I was looking at the Bassani X-Pipe w/ cats....out of my price range by a lot....then i saw flowmaster's american thunder set....supposed to be damn loud and add decent hp #s...can anyone comment on this particular set? and comment on them for my car?...also i'm open for suggestions on what you think makes the best deep throaty growl and the best hp #s....personal experience is always the best route!...btw im trying to keep the price tag under $500 w/o install.....
thanks

jonathon