Selling spare MSD SCI ignition box without rev limiter. Has never been use. All you need to do to upgrade ignition is add SS Blaster coil ans nipple kit for distributor. Make a much larger and powerful spark. more powerful spark will burn more gas and increase both power and gas mileage. Perfect for heavily modified Civic, Integra and so one. A must if you run Turbo or NOS. CARB legal. $150 OBO plus shipping. Any fair price will be considered.