PerTronix D2001 Flame-Thrower HEI/EST GM 7 Pin Module 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 Each module is tested twice with automated equipment to insure trouble free operation Legal in all 50 states and Canada( CARB EO #D-57-22)* Limited One Year Warranty