HEI distributor on 400 big block in 1974 Dodge Dart Sport
The only issue with the above referenced link is it's suggesting that you can elminate the ballast resistor. You can't unless you purchase a coil that does not require a ballast resistor in which case you could eliminate the ballast with a mopar ecu too.
The GM HEI system did not use a ballast resistor becuase of the design of the coil not because of the module. Also, if you use a stock HEI module it has less rpm capability than the stock mopar ecu, you need to purchase a performance module to get any advantage.