Ready-to-Run distributors are the perfect upgrade for outdated points distributors or bulky HEI distributors. Installation is easy, just connect two wires and you're Ready-to-Run. A maintenance-free magnetic pickup accurately triggers this ignition. The increased output of the internal ignition easily outperforms stock ignitions and will smooth out the engine's idle, improve starting and provide a much higher RPM range. For stability and endurance, an over-sized steel shaft spins in a top mounted sealed ball bearing while an extra long sintered bushing guides the shaft at the base of the housing. Features an adjustable mechanical advance which allows you to custom tailor an ignition curve to match your engine's needs. There is also a vacuum advance canister to help improve economy. NOTE: External coil is required.