The top view shows that the F15's cab was retained (albeit without roof, which could be easily unbolted), and the body from behind the front doors was fabricated. Again this is different from the typical German Kübel body which was a full body from the cowl rearward.
I reckon the body was a wooden frame with steel sheeting construction.
The
Gepäckraum (cargo compartment) was used to carry
1 kl. Floss-Sack (1 small rubber dinghy), befitting its use by a
Pionier-Battaillon (pioneer battalion).
