The Wallabies are clearly taking no chances against Ireland in the concluding Pool A qualifying decider on Saturday under the closed roof of the Telstra Dome.
They have picked their strongest side after what Wallaby coach Eddie Jones described as the toughest selection meeting of my coaching career."
"The guys who played last weekend gave us a real selection headache. They were precise and full of running, as if they had played every game so far." he said.
"It gave us a lot to think about but in the end we chose this line-up which we think is the best to take on Ireland."
Fourteen of the team which defeated Argentina in the World Cup's opening game have been re-named, along with Ben Darwin, who has won that key role ahead of the less experienced Al Baxter.
The other main point of note in a team picked for its experience is the selection of second row forward Giffin after the sickening fall he took against Argentina when he appeared to be heavily concussed while also sustaining a shoulder injury.
Mat Rogers gets the nod ahead of five-try scorer Chris Latham while Lote Tuqiri is preferred to Stirling Mortlock on the bench.
Jones believes Saturday's game will be as good as it gets, "Yes," he said, " I think we are going to see one of the best games of the tournament. Ireland are an extremely good side. We're moving along reasonably well and both sides have a fair bit to play for."
The Ireland team will be announced tomorrow (Thursday).
Australia.15 - Matt Rogers14 - Wendell Sailor13 - Matt Burke12 - Elton Flatley11 - Joe Roff10 - Stephen Larkin 9 - George Gregan captain1 - Bill Young