Australia won the first Test by nine wickets and captain Michael Clarke revealed the Aussies will stay true to that side.
That means all-rounder Dan Christian, who came into the squad in place of the injured Ben Cutting, will be 12th man.
And with a bowler-friendly pitch expected in Hobart, Clarke admitted he could be tempted to bowl first if he wins the toss on Friday.
“I’ll wait and see tomorrow. I think overhead conditions will play a part. For me it’s more about looking up than looking down to see what the weather is like,” he said.
“If the wicket doesn’t change much from what I see and it’s still a little bit tacky and there’s overhead conditions, there’s a big chance I’ll bowl first.
“But I’ve said that a few times in the past and gone out there and batted.
“I guess the two things I find really hard are bowling first when I win the toss and not picking a spinner.”
Meanwhile Clarke has downplayed all-rounder Shane Watson’s latest injury, saying: “Watto has got a slight calf strain. It’s put him a couple of days behind but we’re confident he’ll be right for the Boxing Day Test.”