O.K., I know this topic has been covered before and I hear a lot about loss of HP. What I wasn't clear on was "Can I maintain the HP I currently have after converting to dual if I use the right size pipes?" The engine and exhaust are completely stock and I plan on keeping it that way except that I would like to convert to the dual muffler look purely for cosmetic reasons. I much prefer the way the V6 looks with the dual mufflers. I would use generic mufflers and tips to keep down cost (I don't care about having a GReddy, N1, or Hayame). All I'd like to know is if I can avoid losing HP by running smaller diameter piping.