There is a major problem in trying to present a Pantera as a totally correct concourse example.
The haphazard factory-produced mismatch of early, mid and late components seen on multiple cars, would seem to make it nearly impossible for a concourse judge to positively declare some component to be incorrect or be missing.
there is no factory documentation of every car produced that could serve as proof to convince a concourse judge beyond any doubt that the car in front of them was actually totally stock, or just a factory-produced miss-mash of components
I think only single owner cars with a solid 50 years of documentation might be the only examples one could correctly identify as being totally original and correct.
Larry