Hey, if someone wants something like this for free then I have all of the internals from an old Heathkit from the early 80's.
Both cards from the system look like ISA and one is the CPU/video. I don't have the cards in front of me, but theres a second card that I don't remember what it does. I think the CPU is an 8088.
I also have the Zenith service/assemble manual that went with the computer that the cards came in originally. It has all of the board's schematics in it.
Email if you're interested.
-JM