Both 'ready-to-run' dizy's > Magnetic Breakerless Distributors, 3 wire hook up, same price +- $5 I would have to change to female HEI dizy-cap terminal ends for the MSD yet, the Mallory (is) a "marine" distributor! ...feedback ? Mallory > http://www.summitracing.com/parts/MAA-YLM624AV/...