To be honest, I am only guessing about these things. I know some strange things happened, particularly pre-war. Willys bodies became Vauxhall bodies and so on. But by mid-1949 the demand for Holdens would have stopped anything much happening with body pressing other than for the home-grown cars. All the same, I seriously doubt that any GM car had a body made in Australia other than one made by GM-H.

The Vagabonds existed in the earlier shape as well, like the Caleche body, I'm pretty sure. There certainly were utes in the Vauxhall range, but mostly labelled as Bedfords IIRC, at least until the later shape came on the scene (like the cream car above). A lot of that stuff would have come from England as CKD packs and been assembled in Australia.

I am pretty familiar with the Chrysler stuff in the fifties because of contacts I've made over the years and stories I've written for Australian Classic Car magazine which required some research.