Thanks for posting, interesting game due to its Aussie heritage and strong identity tie-in.
I've seen gottlieb coils in these games (and Hankin in Gottliebs!) so they must be a physical match in some sizes. Just need to identify the ohm rating and then select the matching Gottlieb I would think.
Did you get a manual or schematics? I might have some for ESB here I can shoot over which probably would have the same coil ratings in similar spots.