http://www.flighttrainingadelaide.co...TCoverview.htm
they have the Grob, Tobago TB10, and Duchess for twin engine training.
its usually the AFTC who deal with conversion, ratings for self funded students as opposed to training offered by FTA solely for the airlines cadets.
Tobago costs $200/hr with instructor and around the $170/hr mark for Solo flying.
have a look at their website and they should be happy to help.
Richie