A friend of mine is offering me a rustler with a esc for brushed motors. I know brushed isn't very powerful but there is one guy at my track that can beat other racers with a brushed motor. I heard something like it was a silver brushed motor. The esc that I would be getting is rated at 200 amps and has a 17 turn limit. Could I use fewer turns? Who makes a high performance brushed motor?