stock belt is starting to slip, but that is after many many many launches on high grip pavement, plus you have to powerbrake it for a few seconds to spool up the turbo. Dragonfire sends a belt witht he clutch kit for the turbo that we are about to re-install. Other than that, I have gorilla axles coming for the +4 kit since we learned how easy it is to break stock axles from Shane (Xtreme). I hope I got all of the weak points figured out. It is gonna be our "racer" so Im sure I will uncover a few more, but the major ones should be sorted.