I'll add another option
In my master Ukrainian OOB there is a "M1A1 Cage" in slot 756
Right now it has an end date of 9/125....... why 9/125 ? IDK exactly. I suspect I added this between when I slipped and fell on the ice and when I was admitted to hospital and don't remember anything for three weeks BUT it's an MIA1 with ERA added and with the date extended to 12/130 I think it would be ideal as the Australian addition to the Ukrainian inventory of M1A1's without adding a separate unit that does the same thing.........and it's green