Have you tried fourgreen.com? they're pretty much the best resource for NOS Korean parts- in fact many stealerships here use them instead of the manufacturer to get stock-, and they ship right from Korea (which would be a HUGE advantage for you since going from Korea>US>Aus is extremely cost inefficient). I'm on the Festiva forum (a Festiva is another Mazda/Kia thing but with a Ford logo on it) and a few guys on there swear by them.
You're going to need the Kia part number for anything you get from them though, their catalog is absolutely painful.
edit: here you go: http://www.fourgreen.com/store/scripts/RUBBER-BODY-MOUNTING-UP-p-0K01939941