With a warning that strike weapon Rupeni Caucaunibuca comes armed with "a GPS to the tryline", Fiji are vowing to ambush Australia in Saturday night's rugby Test in Canberra.

While winger and vice-captain Sireli Bobo is the only survivor from the impressive Fiji team that reached the 2007 Rugby World Cup quarter-finals in France, skipper Deacon Manu insists the Pacific Islanders are in the national capital with only victory on their minds.

"We hope to deliver a performance that we are proud of," Manu said on Thursday.

"In terms of what we want to achieve in the game, we want to make sure we're matching them and then we'll play to our strengths in making sure that ultimately we come away with the win.

"If that means that it's entertaining rugby, then so be it. We're obviously here to do a job." Fiji accept they are underdogs against a Wallabies outfit currently ranked third in the world, but Manu and Bobo firmly believe the tourists possess the playing talent to spring a boilover.

Central to Fiji's plans is Caucau, formerly one of the world's most destructive wingers who will emerge from four years in the international wilderness to line up at outside centre this weekend.

In recent times, the ex-Auckland Blues sensation has been wowing fans in the France Top 14 competition with Agen, reportedly bagging 13 tries this season from the midfield - where he apparently began his playing career before, as Fiji coach Samuela Domini put it, "he got too fast".

All the softly-spoken 29-year-old would disclose on Thursday was that he was "looking forward" to mixing it with the Wallabies in the hope of landing a contract with an Australian franchise for next season's inaugural Super 15 competition.

The Wallabies suspect that the opportunity to impress Australian talent scouts will provide Caucau with further incentive to wreak havoc at Canberra Stadium.

"We've all seen what he can do and how he can create from nothing, so we're keen to contain him," Wallabies flanker David Pocock said.

It was Bobo who joked that Caucau is blessed with a "GPS to the tryline" when asked what was so special about playing with the 112kg speed merchant.

But Manu believes Fiji also have other aces up their sleeve.

"We have a few unknown players that there's not much video analysis on them (available to the Wallabies), so hopefully they'll put their hand up and cause a few surprises," Manu said.

"I also think the mix of the side is a strength. We're very athletic but we've also got some players with a hard edge from playing overseas.

"There's always belief in Fiji rugby. We've proven it over the years.

"But we also know the task ahead of us and how big it is. There's a lot of young, youthful Wallabies that are definitely going to put their hand up and be stars at the World Cup next year and I guess we'll get a taste of that on the weekend.

"But in any international stage that you're playing rugby, you have to back yourself. If not, there's no real point turning up." Lock Dean Mumm said it would be foolish to take the Fijians lightly.

"Fiji have dramatically improved the last four or five years and they compete with any of the big nations, any of the best in the world," Mumm said.

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