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To light the fire, a GM-style HEI billet distributor, wires and separators were ordered from MSD. We won't need the wires until the engine goes in the car, as Speed-O-Motive already uses MSD wires on its dyno. Since John has plenty of firewall clearance, the simple coil-in-cap design of the HEI was a simple choice. Unlike a junkyard unit, the MSD HEI has a digital module and hot coil to provide plenty of spark energy.