SB/BB GM CHEVY V8 305-454 1955-1985

Description Features include: High Performance Ignition Module Fully CNC Machined Fully Self-Contained – Only 12V External Coil Hookup Similar size as stock points distributor Wider Plug Gaps to .050″ Easy 2 wire hookup Eliminates the need for extra wiring & ballast resistor Correct Drive Gear *Unit requires the use of a High Performance External 12V Coil