One of my clients is one of the top Chevelle restorers in the world. His shop is unbelievable, stacked with tons of NOS parts, multiple LS6 coupes and convertibles.
He said forgery is a big problem and people hire him to fly around the country to verify cars. The tough thing with Chevelles is that without a built sheet, its hard to prove what the car was equipped with. I couldn't get over what people were paying for the convertibles. I'll have to ask him about this car since he seems to know of all of these barn finds when they pop up.
I saw this car when he first picked it up, it was rough as hell.
This one got sent to Mecum.