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Another cool way to go for an ignition upgrade is this replacement distributor from Davis Unified Ignition. It offers two other advantages over the stock ignition in addition to eliminating breaker points. First is that the distributor also contains the ignition coil in the cap, thus eliminating the separate coil from the engine bay and the remote coil-to-cap wire connection. This DUI distributor also features a larger diameter distributor cap. As the voltage figures grow because of a more powerful spark, the extra distance between the contacts helps reduce the chance of the spark crossing over to the wrong terminal. Like the Pertronix distributor, this DUI unit employs a GM-style cap and rotor.