Hey guys.. I have an evo 9 mr.. I want to have a cutout in my downpipe for the track. But I havent taken a look at the stock downpipe/exhaust set up.. Is there a forum for this? I want to see where the cats are. I dont know which one to get for the stock downpipe... the 2.5 inch dump .. or the 3 inch? I'll be tuned for it. Im going with the cheap manual cutout. I dont have the money for an electric right now.