I have more questions, can I gear 46/21 or will i over heat the motor?, i really want to stick to 3s lipo because thats what i have. If I can get 60mph with that motor on 3s what motor will?, I am probably going to race with this car. My last question is how much you huys think i can get for the jammin .12 with the pipe, fuel tank, ofna engine mount, and pull start? (it has less than a quart of nitro threw it according to the previous owner)