Skipper Tim Paine is backing Victorian pair Marcus Harris and Aaron Finch to open the batting in the first Test for Australia but admits the top six is not yet locked in.

"I think if Finchy plays for us ... I dare say it is going to be at the top of the order," Paine said on Friday ahead of the opening four-Test series against India beginning December 6.

"If they're the two we go with, I'm totally comfortable with that."

Australia named a 14-man Test squad this week, as speculation grows around the make-up of the top six.

QUICK SINGLE Uncapped pair named in Aussie Test squad

Paine said runs in next week's round of Sheffield Shield matches and conditions at first-Test venue Adelaide Oval would carry weight.

"We've got Mitch Marsh in the side at six at the moment. If conditions dictate and you only need four bowlers, you could play all of the batsmen and shuffle the order around," he said.

"It's important we've got lots of options. Clearly this next Shield round is really important for a number of guys."

Paine, though, backed Harris to make his Test debut after watching him bat from behind the stumps when Tasmania played Victoria this week.

"I've always thought Marcus Harris was an excellent player, even when he was playing for WA," he said.

"I think his defence has improved a lot and he's had that really good attacking game and can score very quickly. So I think his game is pretty well suited to Test cricket."

The fifth Shield round runs begins Tuesday, with the Test squad to assemble in Adelaide on Saturday.

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Harris, who scored a second-innings 67 against the Tigers, will open for Victoria against Queensland at the Gabba but Finch will bat down the order. Paine said where, was up to Victoria.

"To be honest I'm not too fussed," he said.

"You'd like to think they'd help him prepare as best they possibly could but at the same time they've got a shield game to win."

Victoria skipper Peter Handscomb, also in the Test squad, agreed.

"He opens the batting in all white ball cricket with the swinging ball there, so he has got the skill to do it," he told SEN Radio.

India Tour of Australia 2018-19

Gillette T20s v India

First T20: Australia won by four runs (DLS method)

Second T20: November 23, MCG

Third T20: November 25, SCG

Domain Tests v India

First Test: December 6-10, Adelaide Oval

Second Test: December 14-18, Perth Stadium

Third Test: December 26-30, MCG

Fourth Test: January 3-7, SCG

Gillette ODI Series v India

First ODI: January 12, SCG (D/N)

Second ODI: January 15, Adelaide Oval (D/N)

Third ODI: January 18, MCG (D/N)