Good to see the Aussies pick up on the locally made CB. I had a few of these to nick the running gear to make my 1943 Kommanderwagen. The steering wheels were 1950's and are worth a small fortune to VW nutters.
The Australian army had a few to test and a couple still survive today.
To make a replica kubel out of one of these all you need to do is keep the floor pan and throw the body away. There is a fellow in Chezquavalphabet that makes kubel parts and body panels to suit, all you need is buckets of money.