arthr31 said:i think, a stock engine can't build enough output to warrant a 5" exhaust. With that said, maybe look around for a 4" that you can afford. I think a mbrp 4" aluminized might go for like 3-400. You'll like it, and it's easy to get installed... i'd only go for 5" if you were building for big power, like 350+ HP. This is what I've heard... good luck.