your best bet would to be to try to search the home land here in Australia were the car was actually made.
Im not sure of any online wrecker's but a google search found this wrecking yard
The car is pretty common so you shouldn’t have to much trouble. Also try http://www.streetcommodores.com.au they have a load of information. Try the for sale section in the forums.
Only down fall is your going to have to pay for shipping