Injection molded, or at least affordable aftermarket. There is a 3D printed RSO on Shapeways, but it is $875. I'm not knocking the guy who makes it, bit that's a bit steep for me.

Thanks

Maybe some RC kits would be usable. What about a metal 1/16th scale Opel Blitz for 300 euros ?

https://www.asiatam.de/product_info.php?info=p888_at-wehrmachts--lkw-3-tonner-metall-1-16-allrad.html&XTCsid=kum4mkcb77l1eu3681re75uua4

Half-tracks :

http://www.ludwigs-hobby-seite.de/sdKfz251C.html

H.P.