The long anchor plates all line up, therefore "2" should match where "6" were.
But i think you've got (3) and (4) severely mis-positioned.
Your (1), (3) and (5) should all be the same distance back from the seat pedestals.
You evidently need this photo, too:
The front of the Sprinter is off to the right --->> in that photo.
The brown bar across the rear end of the short anchor is simply part of my bed frame.
In this next photo, i'm standing with my butt between the two front seats. Hence "front of Sprinter" is down v
--dick