In all seriousness, this is a great electronic distributor with built in ignition for the 318. You probably need a different coil as well but this thing is a vast improvement over the factory setup. I actually converted my 68 with points, condenser, ballast resistor to this and it ran great. Much hotter spark and simplified wiring. For the price you could actually buy and extra for the EMP and keep it in a Faraday bag in the trunk, then you have it as a spare part either way. The other problem with your van is all the alternator voltage is run through the harness to a ammeter in the dash (at least I think they still had that in 86). The bulkhead connector on the firewall is prone to failure.
Small Block Mopar Dodge Chrysler 318 340 360 Complete Electronic Distributor Hei | eBay
PS, I used to keep the old setup for my 68 (which was a fastback Barracuda) for after the EMP as well. I wanted to cruise the zombie apocalypse in more the desert running "Vanishing point" style. A few years back there was a TV show set post EMP called "Jerico". The guy had an old Mopar there as well, the glaring problem was it was a 1969 which was the first year of electronic ignition! Oh well, Hollywood.