Hi John,
it isn´t small. :-) Only the lory in the rear is bigger. It is K3, but militarized civilian, or early tipy of military lory. Another grill, big front lights, only a few side eniginy ventilators, civilian wheals.
I have in my K30 on the engine cover in cab on the passenger site lubrigation chart with this wheals (double in the rear and slim in the frotn) Standart military wheal 10,5-16 with combat rims came during the ww2.
Radek