Torres depends on the Serial numbers. Id think anything from sn. 500 onwards would be ok still.
-200s and 100s are to old but can be modified with derated -27 or -34 engines whic better TBOS with primary and secondary nozzles as aposed to the -20 single stage burners. Which get bloody hot on start hence their tiny TBO....
But the A VAN is the way really.
Also another complication with twotters is the requirement for GPWS in Oz.
Anyway Take care with your purchase
Borek and Rocky Mountain in Canada can give you good advice on these beasts
Regrds
Sheep