Designed primarily for race applications with no mechanical advance. CNC machined billet alum housing and billet alum base. Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range. Adjustable slip collar mounting flange for engines with modified deck heights. Polished steel shaft is QPQ coated and guided by a sealed ball bearing. Special oil tract improves lubrication to the distributor and cam gear. O-ring seals can be added to modified blocks to improve oil pressure control. Supplied with a 0.006" oversized bronze gear installed. Supplied with an HEI style dist cap and rotor (accepts Cap-A-Dapts). Must be used with an MSD 6, 7, 8, or 10 Series Ignition. Will not accept a vacuum advance canister. No CARB Exemption Order Number.