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As 1980c10 stated, what are your skill levels ? If you can find something you are good at and also like doing, it is almost a guarantee that you can succeed. Velojym has a great point, I have been kicking around the idea of doing the same thing. I drive a lot for my job as a Srvc. Manager in the field, and I see all kinds of stuff in people's yards and such, the thing is if they believe it is just junk or treasure. You will not know unless you ask. Fitz, I have though about starting something like getting rust free cabs and beds to the rust belt, I can get 73 - 87 trucks all the time for $500.00 or less, just have not found a cost effective solution to the "getting it there" without paying a fortune yet.
Bake if you do that I'll be your first customer. I'm a rust belter and I'm not having good luck finding a frame for my convertable.