got a couple things. my old katana i still have the joker. anyways. i wanna turn it into a stunt bike. i can do all the work but what is good to use for a 12 bar? and a for a cage as well. i have already took my plastic off. what size spocket u think(huge and ugly i know) and chain. and so forth. this thing is not gonna see street action. anyways, ideas.