For anything to do with 101s you need to go here:
101 club
They will be able to direct you to any Australian 101 owners who will know of any for sale. They are pretty rare down there but there are a few about. The Australian army used them as Rapier tractors.
I think I saw a thread there a while ago on rescuing one of the prototypes from someone's front yard.
Here's the best link I have for 101s in Australian service:
REMLR site
