I
have seen one with apes on it. Can't remember where though (probably searching google). Not sure where to send you for longer cables though. Might try searching google for custom length cables.
Custom pipe, take a look in the "HowTo" section of this forum. I put up a post about putting a custom pipe on, where to get it and how to do it. I'm not sure that dual pipes is an option because of the smallness of these pipes. Now, if you can get someone to do custom bending and welding, you'd be set. Wouldnt have to rechrome if you are going to wrap them
Other custom jobs i have seen is mounting aftermarket seats (seen one with a sportster seat on it) and custom fenders (jesse james custom fender). I've seen one bobbed and many with aftermarket pegs, mirrors, side mount plates/brake lights and a flame job paint. Theres alot you can do, only limitation is your imagination!