Ford Dearborn has the ownership of intellectual property and I understand whatever was kept was sent there much to the disappointment of keen fans.
https://www.carsales.com.au/editoria...ry-war-103987/
Press tools are large, heavy and often modified to suit ongoing requirements. I very much doubt there was any thought given to retention by Ford Australia. They would have fulfilled their legal obligations to spares prior to shut down. Where the equipment ended up only those involved with it would know and as you state there is nothing on the web regarding it's disposal, only the Factory real estate.
The only company I know of who actively sought out obsolete tooling for manufacture of panels and bodies is in the 1980's by British Motor Heritage Group which was established as a profitable separate company.
There is more world wide interest in MGs and Minis than older Aussie falcons.
http://www.bmh-ltd.com/bodyshells2.htm