Isnt your car a 3.4? I cant immagine a 3.4 sounding any better then a 3.8. My personal Opinion, Kasey's car sounds GREAT at idle, almost exactly like my Z, but when he gets on it does get alittle anoying but its nothing compared to Jame's car!
If I had a 3.4, Id stick to a simple magnaflow muffler, or even a flowmaster, but I wouldnt bother with a cat-back.
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