With over 124,000 miles of ARCA competition without a single failure, Mallory's CT Pro Series of ignition is the right system for your automobile! This latest version delivers the same dependability in a fully adjustable digital rev limiting. Forget about chips, get the most accurate rev limiting with just a twist of the 2 rotary switches - adjustable in 100 RPM increments from 1,000 to 9,900 RPM. The rev-limiter was specially developed for smooth action and won't upset the chassis. The CT Pro utilizes Mallory's exclusive enhanced heat and vibration technology and are fully encapsulated. Equipped with a 6 pin weatherproof connector to plug into most popular harnesses. For 4, 6, and 8 cylinder distributor equipped engines.