Nice pictures! The top one is a 800 series car with the top board addition. This is how all I have seen have been. The rest of the cars are all 700 series cars without the top board addition. 700 cars are easily recognized by the steel angles at the corners. The 800 cars have a stake inside each of the 4 corners that the side boards bolt to. The top board on the 800 cars were added using the steel plates like the 700s. Since the top board was added to the cars, there must be a picture of a 800 car out there without the top board.