Just based on my experiences buying, selling, and following the classic car market - for all cars that are not individually known for winning a race, or some other historic achievement, when it comes to price, image in the eye of the beholder is everything. Even for the most pedestrian makes and models, I've found it astonishing at the list of intangibles that add value: a car that can differentiate itself just because it is a Ferrari, or even one that isn't but was assembled at the Ferrari factory; a car that was in some way involved in a movie, ad campaign, or otherwise; a car that was owned by a famous individual or actor; and more. For the time being, these "Factory commissioned" cars have value above and beyond what a typical concours restoration brings, if only because of their position in history. But like all things with intangible value-adds, as more Z cars get restored to factory original, we may see a change in the pecking order, as more collectors educate themselves with what is period correct, and what isn't, and decide for themselves what is more important.