Im not sure about going single i just mentioned it, im not worried about legallity stuff, but i was going to just put a 2& 1/4 or 2&1/2 whatever the stock piping is inlet racepipe with like a 3 inch in the middle and 2&1/4 or 2&1/5 outlit and replace the mufflers with stock piping inlit and 3 or 3.5 max inch tips
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