In June 2018, I got in contact with the seller of this
Unfortunately, the car is still in storage, and to many items have to be moved before we can get some nice pics of this coupe.
Based on a 1969 Pontiac Grand Prix chassis, this car shows a unique detail:
The gas-filler is not located in the middle of the
spare-wheel, and not behind the license-plate,
it's on the rear-fender, behind the C-pillar, never seen this on any other 1971 Blackhawk.
Please contact Michael Caulder, if you are interested in buying, he will get you in contact with the owner.