Pertronix D72000 4 Pin Ignition Module (GM) Thick film technology on alumina ceramic substrates removes heat for greater accuracy and improved reliability Laser trimming gives precise peak current control for increased energy output Available in a Street/Strip, Race Only or the HEI III version HEI III offers multiple sparks to red line with a digital rev-limiter that can be set by the user with dwell current at 72 amps Legal in all 50 states and Canada( CARB EO #D-57-22) Limited One Year Warranty