Points to electronic ignition for a 318

The big ***** I have with ANY aftermarket system, whether MSD, Mallory, Pertronix, "er whut" is WHUT do ya do when it quits? Not it might not ever.......but it might.

This means if you buy Pertronix you'd better buy TWO, so you have a spare.

With the Mopar factory setup, or even a Mopar distributor firing an HEI module, you can at LEAST get these locally.

Obviously you have never used a Pertronix conversion. If you had, you would know that you can keep your old points and condenser in a little bag in the glove box. If the Pertronix quits, you just refit your points to get you back on the road. That's why I prefer to use them when I can.
It's a very simple bolt in conversion, you won't even need to remove the distributor from the engine unles you want to replace it as well. Buy it, use it. You will be happy with the result. You can also upgrade to a better than OEM coil if you like. It's easier just to get a 12Volt coil and bypass the ballast resistor to a constant 12V system