Just something I can think you could add.
If you have those small drills,#'s 60 to 80,there are
many small drain holes you could drill on the
splashguards near the various filler caps.
These allowed water to drain away,resulting in stains.
Align the hole with the lowest point on the curve.
Remember to drag a small thin streak of rust or oil downfrom the hole.
K ration boxes tied to the back deck ,would be a nice addition.
Would it be possible to fill the seam between the transmission
and the bolt strip,this was continuous.