Travic Schreven won the Carpet Nats this year in Stock and 19T sedan. If you gave his motors to anyone that finished behind him the resuts would have been the same.
Stock is 50% driving, 40% car setup and 10% motors and batteries.
I think most B-main and bottom of the A -main club racers could put 19 turns in, run in stock and still finish exactly where thery usully finish.
If you are slow it because you are slow and your car is slow. Step away from the keyboard and go to the track and get some practice. Work on your car. Make sure the bearings are clean and the diff is smooth. That's the only thing that will really make you faster.