Electronic ignition help needed

I have a 1989 Dodge D100 truck w/ a LA 318. It was, originally a roller cam, lean burn, throttle body w/ ECU. I am building it w/ a flat tappet hydraulic cam, 302 ported heads, Kieth Black high compression pistons, Edlebrock RPM intake & 600 cfm Carb. & using a Mopar electronic ignition set-up. This means that the ECU will no longer be needed. Has anyone ever deleted the ECU & rewired a similar set-up? Do I need to add a Horn/ Starter relay? Someone said that I would have to use an old style alternator & voltage regulator, is that true? Is my current ammeter one of the ones that is wired in series? Can I just use an older engine harness, or is there a better solution? I am going to use a mechanical fuel pump, just plain more accessible. Any help will be much appreciated.
Author: D-cat