PerTronix D2070 Flame-Thrower HEI GM 4 Pin Race Module Thick film technology on alumina ceramic substrates removes heatfor greater accuracy and improved reliability Laser trimming gives precise peak current control for increasedenergy output Each module is tested twice with automated equipment to insuretrouble free operation Legal in all 50 states and Canada( CARB EO #D-57-22)* Limited One Year Warranty