I've a 1960 (300), 1965 (650) and 1975 (850). All have been good engines. The 300 and 650 have a magnito, which points are hard to find and expensive. The 850 has a distributor and switch box. Again expensive ignition parts if you can find them. Carburator parts (floats, gaskets, needle n seats) are available. Fuel pump parts also available.