Well I got the Hertz HSK 163 components for $550 delivered. Not bad. They retail at around $750 or more in Aus so happy with that.

sortofbigbj : I was happy just sticking with the standard 3-ways, everything I've read about the HSK 163s seems to be positive. I have the Dynamat already so I'll prob just use the whole lot on the doors, unless there is somewhere else that I can put some that will be more effective. I also bought some plastic speaker adaptors that should save me making MDF rings.

Still looking for suggestions for a 10" sub enclosure for the Golf's boot if anyone knows any... Will save me trying to make one