Unless the coil requires a resistor (and I think most after~market HEI's with external coil DO NOT) Your wiring will be the same as your stocker HEI.
Does the new one Have a "BRAINBOX" or is it all contained within the distributor?
Should Be A "plug and pray " Swap out!
Check to be sure your plug wires will handle the new high tension spark, and your plugs are gaped accordingly. and you should be gold!
Electronic & Electrical