I think what I need to work out is exactly what sat nav unit was fitted to the 2010-11 WRX and then, from there, if that is the same sat nav fitted to the 2013 WRX I've got. Figuring out my model is straight forward, it's the 2010-11 I can't figure out. I need an Australian-model sat nav part number. Can anyone help?

The MY13 is EXACTLY THE SAME as the MY11. I have the media hub thing that I bought from the states and got that installed by Subaru here when my car was getting serviced on my MY11. It WILL work.

Thank you, so much. Any recommendations on a good place to buy from? Seem to be a fair few options!

would you know if the media hub can be made to work with aftermarket head units, or if not, a plate that covers the rca ports in the centre console?, i have an MY13 hatch