Getting in early...well not really given back to back tests.
Changes to both sides?
Australia might go Clark for Hauritz or otherwise unchanged I would have thought.
England should go Panesar for Onions and maybe Broad out for another fast bowler, though I'd keep Broad as part of a 4 man seam attack as long as they don't bowl him as if he Is the leader of the attack.
Wouldn't put it past England to drop Swann and Anderson for Onions and Harmison though.