These assemblies are the complete kit needed for your engine. Aluminum strut plates attach to the front of the engine block providing a strong foundation for the starter mount, some struts come with provisions to run crank trigger pickups and pointers. The 3/8” thick aluminum starter plate is attached to the struts with 1 1/4” aluminum stands and 3/8” diameter bolts and studs. The stands have 1/2” dowels machined in both sides to hold the starter concentric with the end of the crankshaft and angled braces to provided added rigidity. All nuts, bolts, studs, and washers are provided in the kits. Available it fixed or removable mounting styles.