M151A1 "jeep" in RAAF service?

[Hanno Spoelstra]

On the Australian War Memorial Photograph Database I found a picture of a M151A1 "jeep" in service with the RAAF in Vietnam. As far as I know, the M151-series truck was never in Australian inventory.

Who can tell more about the use of M151-series jeeps by the Australian military? Was the one pictured here a one-off or were more used in Vietnam?

Thanks,
Hanno

Negative Number: P02120.001
Caption: Vung Tau, South Vietnam. 1970-01. Vietnamese children from an orphanage, possibly the An Phong orphanage, play happily on top of and in a RAAF jeep. They are watched by Father John Grannall (right) and Bill Deane, the public relations officer for the National Headquarters, Australian Red Cross, Melbourne. The orphanage received support as a civil aid project from locally-based Australian and American forces. (Donor C. Tilly)