GM HEI 4 pin module,
Go to
www.designed2drive.com for a nice neat mounting bracket for your distributor.
Use either a genuine GM 4 pin, or a Napa echlin.
Remove all the wiring you just installed but keep distributor.
If you mount the module on the distributor you will need a very minimum of wire to connect it to the ign coil. And can use the cars existing harness. The only mod to it will need is to remove the ballast resistor in the ignition circuit, and connect the wires together to get 12V to the ignition module.
Go HEI on that proform mopar distributor. Way, way hotter spark than what you have with the mopar styled brain box which requires a 6V resistor and hobbles the system.
