Kooks does make a small 3inch race muffler that could go in the place where the cats would usually go I think. If you plan to supercharge down the road leave the cats off. If you dont plan on a supercharger or live in a state that needs the cats then get the high flow cats. Hope this answers your question.
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BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.
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