In the UK we have a few 'used parts finder' web sites where you enter details of the parts you need ,free of charge, and various car breakers who have a Jazz in their yard contact you with a price. But I doubt any would ship to Australia. Do you have any such sites in Australia , or other slightly more local Australasia/Pacific countries?
It might help your search if you are able to find a photo of a similar Jazz engine bay and edit it to highlight the missing parts you need.
If you post this image to this forum someone might be able to name it, or even find a part number moulded into the plastic on their car.
Of course it would be a bit unfair to use a VPN to pretend you are in the UK to get similar help from UK breakers yards
If you also send this image to wreckers in Oz they may be more likely to respond. Good luck