I put a electric start on my hemi 212cc engine but had to change flywheel and crankshaft to a honda gx200 so that the electric start flywheel would match the taper on the crankshaft. The predator crank taper is different than the honda gx crank taper. But you may be alright , just bolt on the starter and see how the starter drive matches up to the flywheel ring gear on your billet flywheel.