ok guys i have a simple question.

i got a used, and in excellent condition OFNA Ultra Comp LX, i have since ordered all integy aluminum upgrades, and have got new tires (badlands) and wheels..... ive replaced the steering and throttle servo's (steering is jr 4721 and throttle is JR Z590M, now, i have some money to blow and am wondering what motor would be a killer upgrade for this car? it has to bolt right in and be pullstart. im looking for maximum power and ease of tune-ability, as im a total novice with Nitro..... im an electric Heli guy.... ;-) im looking for something that absolutely kicks arse, but doesnt shred the drivetrain ;-)

anyways, im looking to spend up to 250.00 -300.00....

any suggestions are greatly appreciated.!! :-)