Yes i have run it just started breaking it in, got 3 tanks in it. It is insane this motor is sick!!!!! The super stinker has nothing on this motor it actually the motor from an lst and i can see why losi dropped it in the lst!!! It took no modifications just dropped right in. and no i do not plan to use the metal spur gear unless i have too. The metal spur gear is alot heavier than the plastic one and makes the trucks a little sluggish, so if i can get away with using the plastic one im gunna stick with it, plus i have like 5-6 of them laying around if the one on the truck goes. Another thing about this engine is it runs great it ran around 150-200 degrees!! It was only 200 when i started hammering it a little more and i believe it will hang wheelies once its broken in. best mod by far for this truck!!!