Pertronix install. Really couldn't be simpler. Remove dist. cap..... Remove condensor and points, pass through wire block... Drop in pertronix plate, locating on points pivot pin, then screw down with points screw... Run wires through dist. body using grommet supplied. Push trigger over rotor shaft until seated on base, hook up to coil,... Re install dist. cap and fire it up! I also installed a flamethrower 40,000v coil with 3 ohm resistance. Get the black housing and mount with label facing the engine, no one knows the difference!