The Chevrolet Task Force followed the Advance Design beginning in late 1955 and ran through 1959. The Apache, Viking, and Spartan (light, medium, and heavy-duty, respectively) trucks were a big step forward with new offerings such as GM's first V8 engine and a 12-volt electrical system.

Marine environments place rigorous demands on every component of the ignition system, especially the distributor. The combination of water spray, salt exposure, full throttle acceleration and harsh vibrations all take their toll. Marine distributors are UL tested and designed to meet the rigorous demands in a marine environment.