A ballast resistor is not necessary with any MSD Series Ignition but can be left in-line if originally equipped. The MSD Blaster Coils and any other oil-filled, canister style coils should be mounted so that the high voltage coil tower is pointed upward. Also, mount the coil so the coil wire is as... (more)
This PDF chart by MSD Ignition details the compatibility between a wide variety of ignition coils and MSD Ignition Controls.... (more)