Holley Marine Pro-Jection Systems will convert any carbureted V8 marine motor into throttle body fuel injection. These sytems consist of specially designed components that combine to form a very effective fuel delivery system for optimum performance. They are composed of three key elements, the throttle body, fuel pump and Electronic Control Unit. This kit will provide enough air and fuel for V8 engines up to 275 HP. Holley Marine Pro-Jection Systems are US Coast Guard approved.