I'm not sure if you guys have a fetish for OEM sub tanks the way some of the 80 series folks do or not, but I figured it wouldn't hurt to throw this out there for you. I happened upon it while searching for an 80 series tank. You should be able to have it shipped to you via Seamail (through the Australian Post), provided it fits within their max dimensions. Search "seamail" in 80's tech for more info.
100 Series Sub Tank - Ebay.com.au Auction Link

100 Series Sub Tank - Ebay.com.au Auction Link
