Thanks for all the input on this. I haven't had much time to tool around but did swap to wires on the firing order and that got rid of the occasional engine 'bang', but the motor still seems to run a bit rough. I purchased the Petronix conversion kit for the points and condenser, so that will be my next step. I noticed there's a fuzzy brush that hits the alternator shaft. Should that be bent away for the pertronix magnet to slip down to the alternator plate?