Warren
Maybe worth asking the guy who runs the CJ3B web site in Canada.....he is a wealth of info . On his site are various Australian references to do with the Brisbane assemby plant.
http://www.film.queensu.ca/cj3b/World/Australia.html
I recall at one stage they were using AMC Rambler engines in the local RHD CJ6 ? . Would have been late 1970's when Bill Patterson was the Victorian distributor. I had a new one on loan for 2 weeks while my WW2 Jeep was loaned to Bill Patterson motors for the Melbourne motor show at the exhibition building.
Mike