If I had the time and money to take it on as a project car, I would buy an ST205 in an instant. With the 25-year rule they're starting to come onto the import market.
Case in point. Here's a beautiful WRC ST205 offered by Japanese Classics.They are coming in at reasonable prices. I'm seeing importers (on the pricey side) list them for 13-17 depending on if it's a base ST205 or a WRC edition. Always wanted to own one, and potentially do the full swap. But the more I looked into it, the more it was gonna cost to do it right. Just a few more K than the full swap and you could get a real, legitimate ST205.