MSD Ignition 62153 DIS-4 HO Ignition Controller Features: Delivers A Stout CD Spark Burns Air/Fuel Mixture Under Extreme Pressure Produce 170 Millijoules Of Spark Energy w/470 Primary Volts Not CARB Approved Designed For Drag Racing Applications Only Features Are Adjustable With Rotary Switches Diagnostic LED Height: 4.00 Width: 12.00 Length: 6.00 Weight: 5.20 lbs Vehicle Type: Ignition Control Module