The motor mount on the photo doesn't have the M3 nut and it looks like that the mount is bolted straight to the chassis.
The other thing what I noticed is that it looks like there is some space between the layshaft holder and the upper deck, without raising the upper deck.
But on the end we all can't know the changes to the production version. He is running probably many different incarnations of prototypes and only few will be used on the end.