Borla ProXS 40659 or 40658 fit in the stock location and sound pretty bad-***. Don't balk at the price... these are 100% stainless steel, and as they say "you get what you pay for". I have em on my 340 with shorty headers, H-pipe, and 2.5" pipes. Fantastic.
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Borla® ProXS™ Muffler - Center / Offset | Borla Exhaust
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