The 70 Duster......

Honestly, i would pull the car out of the bodyshop it's at now.
Pay them for what they've done and say you can't afford to finish it.
Buy some books, tools, and supplies and do it yourself.
You will be money and time ahead, let alone knowledge.
I had to do that years ago after a big blow up with the bodyshop it was at, and the car sitting for months with no work done.
I finished it myself and it looked pretty good.
I do my own bodywork and paint now, and if something goes bad, i only have myself to blame.
I feel for you dude.