Ford 7.3L Godzilla Engine Heater Hardline Adapter KitThe accessory drive components in this system can be configured in several different ways. For example, there are alternator options available for different performance and electrical demands. Also, deleting the A C and or P S are options if configured as a custom modular setup. The "base kits" supply all but the components with options. If you purchased a "Holley complete kit," all these options are already chosen for the most common, cost effective