So if im not mistaken you own this rc? If so I would really NOT recommend any kind of brushless motor. This car is not meant to go 40+ let alone 30. Keep in mind you will break parts going faster than 25mph (same with pretty much all stock rc's). I dont really know but Im sure this car does not have the parts support you will need. As it being your first car you didnt do to bad but I would suggest a better car. It will save you a lot of frustration in the long run.