I have fitted BF turbo front brakes ]322mm] and territory rears [328mm] to my AU3 XR8
but as mention go the 322m don't bother with the 298mm not much of a improvement really
I had BA XR8 brakes with DBA T2's paired with Bendix HD pads on the front of my AU2 fairmont
and the XR8 with the 322mm ones it brakes heaps better then the fairmont I can tell you that
BF turbo brakes
Territory rears