76 280z Parts Car what's it worth

I have just been approached about buying a 76 z as a parts car. I am told it's all their complete just let the rust get the best of it. I have no idea what it looks like but is told it's complete and stock. The interior is supposed to be good. So without seeing it what do you think it might be worth. When I see it I will determine to part it or use it as a resale investment.