Gday Shane and welcome to the MLU forum.
There are a few members in and around the Adelaide area who will be able to help you with your project, I'll let them chime in and make themselves known.
Also, Ganmain Tony has all-but completed his F60L 12 cab and will be an excellent source of info for you. He's a bit of a barstard but handy to know.
It is good to see another 12 cab rear it's head... What is the history of your truck, where did it come from, how did you come to be it's custodian?
Most importantly... POST PHOTOS as most members here have trouble reading.

Cheers, H