Blaster 2 Coil, w/Ballast HardwareImproved output coil for stock points or electronic ignitions, Blaster Ignition or MSD 5, 6, and 7 Series. Supplied with two spark plug wire boots, terminals and a ballast resistor (required if used with stock points ignition). 100:1 turns ratio and lower primary resistance produce high voltage output. Chrome metal canister is filled with a premium grade oil for cooling. CARB E.O. Approved.