He said most aluminum flywheel applications are for higher HP cars sqeezing out a few more HP and smaller motors such as the rice burners that like the quick rev sound and that dont have a lot of weight to turn. He told me that if I were to use one for daily use it would almost feel like taking off in second gear all the time. He also said that the bigger motors need some mass on the flywheel to keep the intertia going through out the motor.