Quick update:

I got the new ICM(s), used thermal compound to mount it, and it seems to work just fine with the new coil and wires.

The website I tried ordering the distributor wired from refunded me, they didn't actually have them. Just my luck.

I tried going on a test drive, didn't get very far before I stalled out and couldn't get the truck started again. I noticed it started weeping from the water pump, decided to try and get it back home. I managed to get it started by popping the clutch while going down a hill, made it about halfway before having to shut it off and pull over because the temp started to climb.

I ended up having to call a tow truck, I'm going to start investigating what actually happened once I have the time to.

Never fails to fail....