I would like to do exhaust, vent the airbox, possible add a power bowl and supercooler, as well as a 14/50 sprocket. I ride in the Arizona desert. What intake recommendations do you have and the stock jetting is a 40 main and a NCVT needle? The bike is a 2006 CRF250X and is currently stock. I would like to make it into a 250R trail bike/enduro, basically.