Each high performance, blueprinted distributor is factory set with a high-performance advance curve. Includes an adjustable vacuum advance unit, a built-in module with magnetic trigger, a premium cap with brass inserts for maximum conductivity, rotor and retro-style Mopar Emblem is prominently displayed on beneath the cap. Fits 361-383-400 Big Block Chrysler B Engines, and features a tan female socket type cap and rotor. An electronic control box is required, and NOT included. Sold Individually.