Hey Trevor it can be hard work sourcing and getting parts for my cars to New Zealand, probably similar for you being in Australia.
Best advice I can give you is to search on this site for places that members recommend maybe ebay but check on shipping costs (some people/shops charge 10x what another will) or even if they will ship outside the US many people wont.
Personally I highly recommend murray at murray b park www.cbodies.com/ (great parts as described good packaging too) and Vanessa from wild cat mopars -www.wildcatmopars.com she was super helpful lady took and emailed great pics of 67 fury tail lights and other parts before purchase also allowed me to have parts from other business's sent to her and then repacked with wildcats order to combine international shipping for me, outstanding service! good luck with your search..