Wales boss Warren Gatland has identified playmaker Matt Giteau as the man his team must stop in their quest for an overdue Tri-Nations scalp.
Giteau has shone throughout Australia's unbeaten European tour, guiding them to a biggest victory over England at Twickenham since 1984 and wins over France and Italy.
"When Dan Carter is on top of his game and dominating, the All Blacks get a flow, and it's the same with Australia and Giteau," said Giteau. "They are very reliant on his kicking game, but also his running game. We've just got to make sure we shut down his space."
He added: "He is deceptively strong in the tackle area, he runs nice lines and he knows when to take a gap. For me, those two (fly-half) positions the last couple of weeks have been pretty critical.
"We did a lot of work last week (on Carter), and it will be the same sort of approach this week in terms of trying to shut down Matt's game."
Gatland has made two changes to his team for the autumn Test finale, with Scarlets wing Mark Jones replacing Cardiff Blues' teenage sensation Leigh Halfpenny and lock Ian Gough taking over from his injured Ospreys colleague Ian Evans.
Evans is out for the season and faces surgery after suffering knee ligament damage during the 29-9 loss to New Zealand.
Jones, who has won 42 caps, gains only his second start of the autumn after a knee injury sidelined him for the narrow defeat against world champions South Africa.
One switch on the bench sees Scarlets scrum-half Martin Roberts in for Dwayne Peel.