Try these, There might be a clue painted on the firewall under the bonnet. The ARN was painted in 1 inch high white letters and numbers up near the top of the firewall.
My Chev had the dents from the sand channels still visible and a scarf where they had shoved the sand tracks up over the centre of the rear window.
About 140/150 here at Morebank NSW in 1940.
And mine.
Regards Rick.