Several of these 4x4 tankers served in QLD. They were designed with approx 2000L and most probably had a Gaam Mk450 pump. They are mostly for grass fires but with the before mentioned pumps serve at a house fire etc.
QFRS Kirwin '112' - Type 1 Tanker 4x4 (Fleet 0827QF - Isuzu FSS500) by coghilla, on Flickr
QFRS Kirwin '112' - Type 1 Tanker 4x4 (Fleet 0827QF - Isuzu FSS500) by coghilla, on Flickr