As long as you have all the legal documents making it yours, and most of the parts to put it back together, who cares. TBH, the dude your describing who owned it sounds squirrelly as heck. I have dealt with people like that before.
But he's also sent me all the docs as well and has never contested that I owned the car. But he did ask how I came into possession of it. Which is an unusual almost legal word which could be used to describe me not owning it but having possession of a car that is not mine. But all's well that ends well. I have all his paperwork to now so no issues.
