This model I made a couple of years ago but forgot to share it here.
Some 20 designs where drawn up following these design specs.
-2 man crew
-between 3,5t and 5t
-armor 20mm frontal, 14,4mm sides
-Tatra 4 cylinder, 90 HP motor -armed with a 81mm PAW600 for up to 700m combat range
-a possible 75mm KWK40 L48 for combat ranges past 700m
Only of the BMW version a full size wooden mock up was made, the size is listed below
-hull about 1m high without the superstucture
The many Rutcher versions
-standard with 2 81mm PAW600 cannons
-big boom with a 75mm Kwk40 L48 (was part of the design specs but does look a bit over the top)
My own designs, which I'm pretty sure could have been made on this small handy chassis
-street sweeper with 2 30mm MK103
-demolition version, similar to the NSU Spr1nger and Borgward IV
-X-7 anti tank missile launcher