GM Late Model Performance enthusiasts will be happy to see this Pro Billet Distributor. The MSD8366 is a drop-in replacement for GM V8s using the small cap distributor with a dual connector coil found in cars from 1987-93 and trucks from 1987-95. The entire housing is CNC machined to exact tolerances for incredible strength (not to mention cool looks). For improved lubrication there is an extra oil tract machined into the bottom of the housing that delivers oil directly to the cam and distributor gears. Inside, a polished steel shaft receives guidance from a sealed ball bearing and an extra long sintered bushing adds stability. This 0.500" shaft also receives a QPC coating for increased friction reduction and corrosion resistance.