If you plan to split your time between the street and strip, the E6 with a Dual Stage Rev Limiter is the right choice. The E6 shares the same high output, capacitive discharge technology as the other E6 ignitions, plus it features two rev limiters. The idea behind two rev limits is to have one for set for overrev protection, while the second limit can be activated on the starting line. This will provide a consistent launch RPM while allowing you to concentrate on the strating light. CARB E.O., D-225-63 Universal - Fits 4, 6 and 8 cylinder engines that are equipped with distributors.