The 20x 400 GT dual sunroof are the only ones referred in the production list
I used to install pop-up and electric sunroofs in New York in the early/mid 80s. From Chevy Chevettes to Rolls Royce. That certainly does not look after market at all. Now, I could wrong. The rolled lips and the lower tray......I don't know, too good and too much work to be aftermarket. I guess it all depends on how bad an owner wants a roof and willing to pay big for it