Hey anyone with a highflow cat, I've searched but I cant seem to find which highflowcat would bolt on with my tanabe medallion without any additional flange usage so pretty much which highflow is the best fit for stock piping since I know fitment is diff. on a lot of them, the reason I ask is because I'm prepping for ethanol and Want to get everything set before i go in and get converted. I don't want to go with a test pipe because I'm in Cali, and it's game over with CHP here if i get pulled with a tp =\

 

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