Geez

Do you just have the electronic distributor?

Then you will need the two pin ballast resistor to go with electronic ignition, an ECU box, and the wiring harness for the box...

There are 5 wires on the harness.

Two obviously go to the two way plug for the distributor...
The blue wire goes to the input side of the ballast resistor (I like to use a piggyback connector for easy install and removal if ever needed...)..
The black wire goes to the negative terminal on the coil...
The green wire is for 4-pin ballast resistors and you just clip it off and throw it away... (Or save the wire for future use...)
Here's what the harness looks like:

Mopar Performance Control Unit Wiring Harness Kit

Here's what the complete kit comes with. You can look at the picture and see what you need:

Mancini Racing Electronic Distributor Conversion Kit

Here's a page from the FSM on a 66 273. They state .013 on the intake and .020 on the exhaust. I'd rather have them a tad loose than too tight. Make sure to adjust them to specs while the engine is hot. I always go all the way through on the feeler gauge.

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thanks, will readjust
You are cool to post me !