1969 Chevy Nova Hei Ignition System Four Pin Module Distributor
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Although aftermarket HEI modules, such as the performance digital module contained in this MSD distributor, provide far better coil charging and spark energy than a factory unit, they still can't match the performance of a good CD ignition and coil. The first step of this install is to remove this four-pin module from the distributor. View Related Article
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