GM MSD Ignition HEI Module with Rev & TCD - 83645

GM MSD Ignition HEI Module with Rev & TCD - 83645
Fits: GM Models

HEI owners now have a choice to replace their stock coil with the MSD High Energy Unitized Coil for GM HEI Distributors. This coil is a direct replacement of the stock coil and offers increased spark energy when used with the MSD HEI Module,