Not mine just passing along.... https://www.ebay.com/itm/1972-Buick...ash=item1ed238182c:g:6Z4AAOSwSQFZ8KX6&vxp=mtr
Might be someone here would know the history on this car... it has a window sticker only an enthusiast would add.
Rare car, but it appears that almost every body panel needs replaced and the frame has been patched. In the end, you still have a 350 car. It would have to be a labor of love for sure. Good car for a person with mad welding skills.
In my opinion if you got the car for free and restored it you would be upside down in it. That car is a very rare GS but it would cost you$ 60-$100k depending on your skill set to bring it back. Only then you would have a 25-30K car. My guess is you would have to buy a donor car for all the rust you need to fix in that one. If it was someones dream car it would be cool to see it restored but what a waste of money otherwise.