Welcome to the site
I cannot help you with the specs but the factory assembly manual does show some details for right hand drive trucks
The manual is availiable for purchase at most the vendors in the U.S. not sure how that affects you.
...link...I dont believe the holdens were availiabe for purchase here in the US, but I could be wrong.
I would like to see the pics when you get them
A few of the auusie 54’s Ive seen pics of are distinct because the windshield is two piece like the earlier years. Not a one piece windscreen like we have over here in the U.S.
