yeah it is a Horch but a later version than the Italeri one
heres the type Rommels in at 1998 Beltring War and peace show at the bottom of this page http://www.twenot.nl/kubel.htm
you might be able to combine the Tamiya Horchs body to the Italeri Horch front to get something like the Rommel one
the Rommel photo horch
the Italeri type, it had two spare wheels one each side, so it wouldnt get grounded going over rocks or bad ground
and the Tamiya type
more here http://mvmarketplace.com/events/beltring/july19_thru_23_beltring_pg2.htm
http://moon.astro.amu.edu.pl/bori/vintage.html