Ramcharger Help

If it were me, I would find another wiring harness for the ramcharger, possibly even use the one out of the van.
Ditch all the vacuum crap off the 87 motor, just keep enough to operate the heater/ac.
The only thing you need to get the ram running is what is under the hood of the 76 van, ECM box, ballast resistor etc or do a simple hei conversion on the distributor.

If it makes you feel any better I could not log on ramchargercentral a year ago.

Are you sure the 318 in the ram is that bad, most of them from that era died from electronic issues or vacuum leaks.