Here's the type of thing I'd recommend looking for:
Lots of partially finished skoolie conversions come up on facebook marketplace and craigslist.
It's important to know exactly why they stopped working on it. Often a mechanical or rust issue is what halts progress, and you want to know that before you spend any time looking at it.
There are legitimately good buys if you look. People get analysis paralysis, change jobs, get girlfriends, get injured, etc., and old dreams wither. This is where you can get into this really cheap with some work already done for you.