I think this car will fall into the same place in history as the Hemi Cuda clone cars, as long as they look smell sound like the real thing someone will pay the price. The car is a nice copy/air car just like a few rebodied Shelby's out there.
As the supply dries up the price goes up.
He won't get into the same can of worms a over a duplicate title/box of parts with a door Vin number a chunk of New frame and build a car then the real one appears then you have a 175K in a kit car.
He has the original title so IF or When the original frame doors or any Vin numbered parts pop up he can claim them problem solved.
Thirty years down the road this won't make a bit of difference just like the Hemi clones....