TSP's HEI Distributor has everything you need, all under one cap. With a high-quality aluminum housing and hardened steel dual bushing construction, it is built to last. It features fully adjustable mechanical and vacuum advances, meaning precision is a breeze. It has a high-output module, high-spark 65,000 volt coil, solid brass terminals, and an easy one-wire hookup. This distributor fits Ford straight 6 (144-250) engines. Please note: will not fit engines that require a 1/4" hex shaft.