MSD Ignition Street Fire Ignition Controller Features: Capacitive Discharge Technology For 4/6/8 cyl. Multiple Sparks Improve Starting And Idle Full Power Output At High RPM Perfect For Budget Minded Enthusiasts Ensures Combustion/Great Throttle Response And Smooth Idle Stylus Type Built In Adjustable Rev Limiter Height: 8.50 Width: 7.90 Length: 2.00 Weight: 2.20 lbs Fitment: UNIVERSAL 0 - 0 NON APPLICATION SPECIFIC