Originally Posted by Lukep48
I'm not sure which size or anything like that to buy though
12inches in length and about 2 and a half inches in diameter is the average for it to fit a stock system. On the other hand the shorter the length the louder, so you could do a 6inch or something that small but you'd have to weld or clamp the extra pipes on for it to reach the exhaust tip, or you could just dump it right after the exhaust with a turn down.
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