Scotland will be looking for an improvement on the 31-14 defeat at Murrayfield two weeks previously.
Key to Australia's victory was the scavenging at the breakdown carried out by the illustrious back row of George Smith, Phil Waugh and David Lyons.
Donnie and Jon, alongside likely breakaway partner Ally Hogg, know they must secure parity with the Wallaby threesome if Scotland stand a chance of securing a famous win.
Donnie told the Press Association: "These are the games you want to play in. Facing Australia is absolutely what you play this game for. It will be a real test again, they have a tremendous back row that everyone knows about. But we're up for the challenge.
"I've played nearly half my Tests against them, so I know what to expect. The first half last week was disappointing and we need to show up like we did in the second to have a chance."
Donnie's battles with Lyons and Smith go back three years to an age-group competition in New Zealand - and the product of the Edinburgh Accies has admired the latter ever since.
The 25-year-old said: "I played against Smith and Lyons back in 2001 in an under-21 competition in Auckland, so we go way back! Smith virtually went straight from the under-21s to the Test team so he's picked up a lot more international experience than I have since then.
"He's got an incredible work-rate and the way he's made himself a ball carrier, as well as someone who recycles ball, is superb. I'd like to be seen in the same way so it's another chance to match myself against one of the best.
"Phil Waugh is also outstanding on the ground so we know we need to be sharp in that area or we'll get no ball."
Donnie's team-mate Jon is desperate to hold onto the number eight shirt for the clash with the Wallabies. Jon was recalled to the starting line-up for the 100-8 thrashing of Japan after impressing as a replacement against Australia at Murrayfield.
"Of course everyone wants to have a run-on jersey, especially in these big games. There's absolutely no doubt about that. Australia's back row is one of the best in the world but we're up for the challenge. We know what we have to do.
"You can't afford to have a sloppy five minutes against class teams and we did that in the first half last week. We must play for 80 minutes. We did that against Japan when it would have been easy to slacken off. We've not won at home for a while so that was a welcome victory."
Jon is the elder statesman of the Scottish breakaway unit but revealed he is trying to influence more than just his fellow back-rowers. The 28-year-old Glasgow captain said: "Donnie and Ally are getting more experience all the time and have played a lot of top-level club rugby and age-group rugby for Scotland.
"I am pretty vocal but not just with them, with the whole team. I also try to encourage everyone to be vocal. It's no use if the young guys have got their head down and are not contributing in that way."
Jon has given his full backing to the SRU's decision to take Scotland's games on the road, with the match against the Cherry Blossoms being the first Test played north of the Forth.
Dundonian Jon, poised to play in his adopted city this weekend, believes McDiarmid Park was a perfect venue for the game with Japan. "It is a great surface and I'd always rather have 10,000 real rugby fans than a larger number of people there just for the occasion. It was good that the stadium was filled against Japan and they were close to the pitch so there was an excellent atmosphere in the ground."
