I like the way the stock exhaust sounds on a GT except Id like it a LITTLE bit louder, don't want it too loud though I still want it quiet inside with the windows up. Hope you get what i'm saying. What's the best and cheapest way to do this? Could I just replace the mufflers or does the entire exhaust system have to be replaced? (probably can't afford that right now) If it's only the mufflers, what are some good ones for what im describing? The tone is fine the way it is, just slightly louder.