* To use the original distributor, it can be connected with the correct polarity to any ECM that works with magnetic pickups.
* To use the original coil, it must be used with a device that regulates the current to the coil. A resistor is one method that for years was the most common. HEI units electronically controlled the current. CD units supply an electric pulse so no other regulation is used. For a standard ignition, if you are running the engine off of battery (12 Volts more less) you can probably get away with running a few pulls at full voltage with no current regulation. If you are running the engine off of an alternator (14.5 Volts more or less) its more likely to overheat and damage the coil.
