It'd be great if Daniel does get some TRD stuff available...
20v, your best bet atm is probably to try Penrith Toyota (NSW). They have a website, http://www.penrithtoyota.com.au and do online purchases, which is better than nothing i suppose.
OR, you could get the part numbers you want from the TRD site, http://www.toyota-trd.com and take them to your Toyota Dealer and try your luck.