The trailer has no existing Original, but as the Germans used what ever they found, so it is fine for me.
the tank truck is from Panzer Depot
Here you see the structure from the printing.
Obice da 305/17, Mörser aus dem 1. Weltkrieg in 1/144 Ich weiss auch nicht so recht, wie es gekommen ist, ich sollte andere Modelle zeichnen...