Now that you're an "owner of a junk property", will you be able to register the car and drive it on public streets? What about the fact that this car is originating from Canada and, I guess, you don't have the original papers... will it make it more difficult? Will you require a certificate of registration from the province of origin? I mean that car could have been stolen, driven to Illinois and left alone in a parking with the licence plate removed...
I once have been in a similar situation, I came across a 1991 Peugeot 405 GT from New York state. The car having an engine problem, the owner left it in a scrapyard. I called Transport Canada and they said I couldn't register it because of a security regulation that differs between US and Canadian models... If I would have bought it, I couldn't have driven it!
Maybe it's different in Illinois... good luck!