If I had more time, I'd like to make some mods but right now I'm buried (with CNC work). I'm planning on going to the local junk-yard and getting an F250 outside door handle so I can get a pattern to make some solid aluminum ones and then have them chromed. Plus like you mentioned, it'd be easy to make a wastegate that runs solely off of drive pressure like the T.M.. Lots of things but gotta keep the customers happy first!
-K