BTT with an interesting photo found on
Axis History Forum > Axis Equipment > The Ron Klages Panzers & other vehicles> Soft Skin Vehicle Photo Repository. On the left on the picture below we see a Canadian Ford F15 4x2 with Cab no.11, many of which were captured in France, the Balkan and Africa in the early stages of the war.
This one is definitely an Umbauwagen as the rear cargo body seems to be replaced by one with higher sides, an open front or side access, possibly to let soldiers (dis)mount. The fixed cab roof was also replaced by an integral canvas cover over the driver's area plus the rear body. Trafficators were added and the headlights have been replaced by "civilian" units. The front bumper is missing. Wish we could see more of this truck....