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High-performance engines need hot ignition systems and healthy charging systems to keep a battery ready. Race-proven MSD systems, especially when enhanced with the 6AL box, light a volatile mixture under the toughest circumstances. Powermaster's 120-amp single-wire alternator not only keeps a high-energy ignition system fed, but also all those power accessories Blair may be thinking of installing. Old-fashioned 45-, 55-, and 65-amp externally regulated alternators just don't cut it when you're running a high-amp sound system and power windows.