Pictures of wiring please

There's a few places to get wiring harnesses but I think you might be beyond that. An electronic distributor ain't gonna do any good if you can't start the car or it burns to the ground.

Listen, I'm sure you could get away with repairing some of this stuff and it would probably be OK for a while but I guarantee the more you drove the car with what looks like a marginal electrical system the more problems will be cropping up at inopportune times.

At the very least, I'd take a careful look at the wires going through the bulkhead in particular. Pull 'em, clean 'em up, pack the bulkhead cavities with dielectric grease and re-connect. Besides that, clean up the starter relay and tape up that exposed wire. Kinda hard to ignore that one.