Lost title
I bought my '65 SIV last September from a guy in Oregon who stated in the craigslist ad "title paperwork in hand". After driving 6.5 hours from Washington to buy the car (it was in great shape and 95% complete) the guy said it was paperwork to file for a lost title. Great. The owner before the guy that I was buying it from wanted nothing to do with the car, but had signed the release of interest part/lost tiitle section agreeing the title was lost and that was it. I bought the car, towed it home, and after many calls to the Oregon DMV who were very arrogant btw, I was able to mail my title paperwork and a $97 money order to them. Thankfully, I received my Oregon title about 3-4 weeks later. My car had not been registered since '84, but I have a vin on mine, so I don't think this will be much help to you? I didn't read all the replies in his section, but have you tried obtaining information from the DMV using the license plates you found with the car? I hope you can figure something out. I'm always very nervous buying a car without a title because of a chance I won't be able to title it. So far I've lucked out. Some states can be very picky though...
Kyle.