Unfortunatly there are some cars that are just too far gone to be properly put back together at anywhere near what their worth.

While there may be some advantage to picking up a basket case (if the price is right) such as putting it together as time and funds permit my experience has shown that not a lot of people have that kind of paitence. It sounds like this has already happened to this car at least once already.

Check around some reputible body shops and see what they would charge for just the labor to replace the metal that is rotted and chances are it will more than pay for the shipping of a body that is solid to where you live.

Additionally when you look at the resale value of a car that has had that much extensive metal replacement you'll be taking another big hit right off the top.

The last point I'd like to make is the longevity of the repairs. I have seen to many cars in the past where the pannel replacement was poorly resealed resulting in major rusting problems reoccuring just a few years down the road.