Difference between a Kawasaki 650 and 750 two stroke Jet Ski engine. 

@slkgeothermal it's a common mod to tap the 750 cases to run the 650 stator and lighter flywheel. I'm not sure about putting a 750 stator and flywheel on a 650. Should be a way to do it but I'm not sure. I never hear of anyone going that route. Usually they want the lighter flywheel and smaller 650 ebox to swap it into a 650 or 550 hull.