You've only got two options there. One is 30mm long and the other 90mm. I'd guess that you've got the 30mm one (I do). I think the 90mm on was only used on cars without A/C because they have a narrower radiator.
The info in my local ETK install shows 30mm support for Aus delivered cars with the 610mm radiator. Thats different to realoem which is odd, but I've got the 03.2009 catalog.
You could always go to a wrecker and checkout the local options. If you're unsure and want to buy new, get one of each; they're only a couple of bucks.