Comes with everything you need to delete the balance shafts and free up power, weight, and increase oil pressure. The design is better and lighter than gutting the shafts since the oe housing is bulky and traps oil. This kit maintains block integrity by bracing the factory locations. You will get some extra vibration in the chassis from this and should be used on built and balanced rotating assemblies. Includes CNC aluminum plate, oil galley plug, hardware, spacers.