LOL. Yep... goes back to the "good old days" when it was said that there were now more Camaro Z/28's in existence than Chevy actually manufactured...I would not be surprised if the number is not growing. Cars that were scrapped or junked years ago are being dragged out of the woods / barns / yards and brought back to life.
I have brought several back that were "dead" cars, and if they would have been a 1968 station wagon, they would have been crushed.
That does not include coupe to fastback conversions or Dynacorn Body cars.
With no original Factory documentation, and the availability of aftermarket or junk car GT parts, any A or K code car COULD be turned into a "factory GT" car. It depends on the knowledge and skill of the person "creating" the faux GT.