The rubber is lower down when stretched over a 9" because it's pulled across further - it also tapers out on an angle. You may not have the perfect offset either

I would've put a 195/45/16 on that wheel.

16x9s are available from loads of places (though ultimately not many in Aus) - Carshine, wheelwarehouse... I wouldn't buy at either of these places, though. Tunershop, Dubmeister and Style Dynamix are only an email away and all ship down here for surprisingly cheap.

I feel bad not buying anything locally, but our new parts prices are a joke and always will be as there'll never be enough of a bulk market.

If you buy from Tunershop USA, ask them to write the wheels down as US-made and they shoot straight through customs without a problem - just tried this one myself

There are some good used wheels in the Vortex classifieds too.