Ive had a similar thing happend to me. About two days before I left for ARMY Basic training, I was visiting my grandparents when a car caught my eye at a house down the road. I stopped in an asked and found out the car was a 1970 340 4 spd cuda. THe guy had bought it new in 1970 and parked it in the barn in 74 due to gas prices and a baby on the way and it sat there for 30 years before I found it. He wanted 2000 grand for it. After I got back I stopped in and talked to him again and he still wanted 2000, I cam back a week later(cash in hand) and the car was gone. Moral of the story, don't wait too long if you got the chance to pick something like that up. But keep looking, you never know, you might see it for sale again one day.