These Street Fire distributors are ready to drop into your V8 engine to replace the worn OEM piece. A factory style ignition module is included along with a durable new cap and rotor. GM moved to this distributor in the late 1990s and only used them for a few years. The unique flat cap design acts as a 'correct-a-cap' meaning that the even number spark plug wires are all on the passenger side while the odd numbers are all on the driver's side. Product Features:Great OEM Update; w/Performance UpgradesUnique Flat Cap Design Acts As A Correct-A-CapOdd Wires On Driver Side; Even On The PassengerPerfect For Budget Minded Enthusiasts