Right....let's get this sorted. The F/D picture is probably a 300, which is virtually a standard 200 F/D. Carousel INSs were replaced with FMS sets on the vast majority of 100/200 variants- in our case roundabout early 80s. The 300 had slightly upgraded avionics, more superficial than anything else, over the 200. The 300 still had a Flight Engineer position and panel- in all respects it was a 100/200 slightly upgraded. The picture is a standard Classic Jumbo fit with strip instruments which were an option from the early 70s. The 400 was the first version to have 6' winglets, a slightly increased wingspan (I think 6' a side) and the attractive blended wingroot fairing. This is not a 400, it's a 300 with a F/E position and no winglets or wing root fairing.
If it looks like a duck, and it quacks like a duck.....it's a duck. This is a 300!