I would take your hard earned money and find a truck that has a little easier starting point. My first truck was $100.00. After $3,000, it still was not ready to drive. On my second truck, I spent a lot more. Probably more than I should have, but I was comfortable with spending it. Within a couple of months, the truck was running and within a year, I took it for a drive. My motivation to stay with this truck is easier. Progress comes much faster. Do a little math exercise and see what all of the parts you need just to get it running or in the shape you want it in would cost (be truthful). You will probably find it will cost much more to bring that free truch home VS buying one in good to excellent shape.

I know of at least 3 AD's in my area that would be cheap starters and are in much better shape than what you are looking at. I am not an AD guy and I still see em.

If I were you, scrounge a part or two of that old truck, but leave it where it is. Money and motivation wise, you be much happier. Keep your eye out if you want an AD...they are hidden every where....but get one and enjoy it.