I have a 94 s-10 and the electronic 4wd is all screwed up and expensive to fix. This is a beater vehicle and I don't want to put much cash into it. Is it possible to convert this to a manually shifted transfer case? And if so, where can I get the parts. If this causes minor inconvieniences, I don't care. I just want to go to a manual shift.

Is it possible that an older s-10 or Blazer setup would work?

You cannot go from vacuum to manual but you can go the other way.
Sorry.

I just seen a kit on ebay to do this and it did change a vacuum to manual.I think it was for newer s10s though.