G'day Wayne
Last time I wandered onto the Muchea RAAF bombing range
, there was a pile of Bren Carrier and Staghound parts piled up to one side of the target area. I remember the Staghound guards were in pretty good nick. I suspect that these parts may still be there as they were sitting under a tree and in the bush.
PM me and I can give you a rough location of these parts.