The MSD low-profile ford crank trigger distributor is designed specifically for dual carb sheet metal intakes and must be used with an MSD flying magnet crank trigger system. The low profile distributor uses a large diameter distributor cap which allows it to carry the high voltage outputs of an MSD race ignition. For high-rpm stability, the low profile distributors housing is CNC machined from a solid billet of 6061-t6 aluminum. Inside this precision housing, a heat-treated 9/16 inch Diameter distributor shaft is guided by an upper sealed ball bearing for high rpm endurance and stability.