Be careful what you wish for........I found a pre-production Jaguar XK120 (alloy body) in a garage less than a quarter mile from my home, and I knew that there was no way I could afford to restore it. I had to pass the car on to an aquaintance with the resources to restore the car. He sank over 100 big ones into it. It's since been a JCNA show winner, so it was done right. There was no way that I could have afforded to do so.
There was a CB MGB roadster left outside a neighbour's house for years, I think she finally junked it (she wouldn't sell it to me) and she also had a RB roadster in her garage, super low miles because she never drove it, but sills and doglegs were rotten because of the damp in her garage...............she gave that one to her brother last year!
They are out there, and as has been pointed out, if you look for 'em you'll never find one, but you'll stumble over one by accident. Let all of your friends and family know what you are looking for, they are often a good source of leads. If you have any contacts in real estate, that source can often be a gold mine, too.