I can ship to Sidney but you would be responsible for paying any import duties. I can create the necessary documents (Commercial Invoice, Shippers Export Declaration, etc...) and ship to Sidney. These would be a "Hold for Pick-up" at FEDEX where you can retrieve the boxes and pay the duties. Shipping costs from my location to yours are $710.00 Aussie Dollars.
It might be cheaper to go to your local Porsche dealer and get brand new ones.