I am pretty sure all the bodies were made in Adelaide (perhaps apart from front end clip) and shipped to Melbourne, Sydney, Brisbane and Perth for assembly. Keith would know. The front could come from anywhere, so you could really have an originally Sydney assembled car for all you would know with a different front on it now (if it was crashed in its early days), but that is less likely I believe in a place as remote as QLD as many of these cars tended to stay in the local area due to the state of the roads back in the day.
This article is good and correlates to a little history lesson I had when I toured Mitsubishi and Holden plants as a kid!
http://www.worldlingo.com/ma/enwiki/en/HoldenI grew up in Adealide and remember going to the Woodville plant in Adelaide. On the tour, I remember the ole guy saying that it was expensive to make the actual bodies for the cars (tooling) and this was done In Adelaide and then other parts were made in Melbourne, but the other states all "assembled" the cars except for the states I have not mentioned above. This may be wrong though, so I'd rather someone else who has been into this stuff longer than me correct what I have said if need be.
