So, the kid I bought the car from took the exhaust off from the cat back and threw it away because he thought it sounded better...... Yeah, I know, it sucks. I want to get some exhaust on this thing because it sounds absolutely terrible. Now, when I'm looking for just the catback, does it have to be GSX specific? Or can it be from a GS, GST, 1g or 2g, etc??