i have the truck with a 2.5 in it now... running like crap. i got it from a friend who owed me some cash (got it for 150 bucks) and ive spent alot of time and money bashing it at the local skate parks. all the kids seem to enjoy watching the thing shoot 20 feet of the ramps, so im just planning on replacing the motor. as far as i know its a simple swap. i should be getting it any day now so im exited to see how well i do with it