Sry for the repost of the same question but when i posted a reply on the thread it didnt pop up under new posts so i figured no one would see it. Just 2 questions. On the exhaust mod do u buy the 2 1/2 pipe that goes in or is it all ready in and second... when you polish metal is it just the process of rubbing sand paper or is there some chemicals you need. Kinda wanted to do this when i got off work today so hows bout some advice guys.