I've only recently ventured in to the 10 mil stuff and love the massive torque it provides. But they definitely don't rev the same. However with some itty bitty ol' 65mm pistons, It would have to help that situation. Also, to boot, that motor will more then likely be next to a 58x68 cub. Even with a bit lamer RT you could probably make up with the torque and still get that thing revved up to charge on the big end. Totally an experiment worth trying out.