Sorry, I don't have much, if anything to add
Every picture you have access to is virtually all the reference material we have. I agree with Geoff on the additional stowage. Some pioneer tools also stowed on the inside, shovels, crowbars etc. The LAD diaries mention moving the #19 set depending on the particular Ram model (models with the Aux. MG turret) but there is not much detail as to exact position. I'll see what I can dig up from the diaries tonight.
Bill.