Just FYI to save on shipping costs- the calipers are the same, and you can redrill your rotors to 5 bolt holes. Alternatively, possibly some other Mitsu uses rotors the same size but 5 bolt that was sold in Aus.
ONe more- ABS/non-ABS doesn't really matter if you want non. The sensor is just installed on the shaft, but without a sensor it could be left there with no ill effect.
Theoretically, you could have a machine shop redrill the rear stub shafts to 5 bolt as well if you can't find the parts.