Holden Ready-to-run distributor include a built-in ignition module so no MSD Ignition control required.;Simple and clean installation with only three wires to connect; Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts); Does not require an MSD Ignition Control; Now includes build-in rev limiter!; Special oil tract improves lubrication to the distributor and cam gear; Nylon pads ensure smooth operation of the advance weights; Powerful built-in module produces a 7.5 amp single spark through high rpm; Easy-to-adjust mechanical advance with supplied springs and stop bushings; Vacuum advance canister for improved economy (can be locked out); CNC machined billet aluminum housing and billet aluminum base; Maintenance-free magnetic pickup and precision reluctor create stable reluctor signals throughout the rpm range; Polished steel shaft is QPQ coated and guided by a sealed ball bearing; Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction; Mechanical advance assembly can be locked out for crank reluctor systems; Advance weight pins are staked and tig welded to the plate;