I really have no idea whether it can or cannot be certified as a P4. If I am correct that the mechanical changes between P4 and CanAm are trivial, then I don't see any reason why it wouldn't warrant being certified as a P4 if everything was correct because there is no major difference between the cars beyond body. Certainly, in period, if Ferrari had a need for a P4 again after CanAm, they would have converted it back. All this being said, I could still see Ferrari sticking to the definition of it as a CanAm, but I would say that is a philosophical distinction rather than an actual one given there was no major mechanical distinction. In the end, I don't care much how Ferrari classifies the car -- someone like Marcel's view counts more to me. I also think the use of "replica body" is a smear campaign on this car. There are tons of certified cars that have bodies created from scratch, many with English wheel or whatever else does not exactly match how the factory did it or even the shape. They have been restored as best they can be and they aren't referred to as a "replica" bodies. In the case of 0858, you can make the case that the P4 is an "inappropriate" body, but other than that, it's no more replica than any other instances where a body need to be created to restore the car.