[TimG]

I think you probably mean things like build sheets, window stickers, POP instead of order invoices, or delivery invoices. Yes, the factory paperwork always carries a premium and the paperwork can be more valuable than the car. A '67 L88 without the original engine that cannot be verified as an L88 would be worth a fraction of the same car with a tank sticker or window sticker. If this car had a dealer sales invoice, it probably would not be worth nearly as much as with factory paperwork. Hope this is what you were asking. It is to the point where factory paperwork is worth more than the original engine on hi performance cars.