Actually I'm not buying this at all, all kidding aside.
Nikon only provides spare parts to its authorized repair facilities. They do not provide them to anyone else, which is why it is a really bad idea to buy a grey market model.
The difference in cost between the 800 and 800E is $200.
That is no where a good enough return to make a fake, especially since they have to source the donor body. Then what would they do with that?
Sounds to me like Nikon has/had a problem on their production line and inadvertently put the wrong bodies on the cameras. And now when these are coming in for service they are trying to pass the blame onto the consumers.