What performance upgrades are out there for the xp1000? I know clutch kits and exhaust but, what about programmers, stroker kits, turbos or prochargers? Also, if you want to list best brands please do so. I've heard many say the dirty dawg clutch kit i believe it is called. I basically want to know if I start mud racing an xp1000 which I havent bought yet, what options do I have to continue upgrading. Those mavericks put a good show at the highlifter mud nationals with nitrous and stroker kits. I just want to race locally so not as much competition. wont need much to start.