Hi Box Head,
I can highly recomend ebay.......it rox
Ebay uses a feedback system where you can do homework on the seller or buyer before you purchase.
Payment can be made many ways EFT bank transfer being the prefered for national purchases.
Goods can be sent COD via Aussiepost also and this is the cheapest of all as you save shiploads on the postage.
International purchases are made with credit cards through paypal
In my last purchase i just picked up those NOS Lucas p700's that were up last week.
I love it for importing engine parts, no tax or duty if it comes through the post .
There are something like 30 corba parts sellers online, you'll find what your looking at the right price.
Huge savings can be made ie..roller fuel cap here $320-$420
On ebay i got a new one for $200au delivered, from a cobra dealer.
Have fun parts hunting, i certainly do
Cheers Robo