Isabelle Kelly expects Australia's 30-14 semi-final win over Fiji to give the Kiwi Ferns plenty to analyse before Sunday's World Cup final.
Kelly said Fiji provided a physical challenge, and noted that many of its players were not contracted in the NRLW but could now push for places.
"They've watched all the games and there's always little things every team can find," she said.
"It's preparing for everything and we've done that well, changing the plan and against the Kiwis we might play a different style as well."
The final renews a rivalry in which New Zealand leads 17-15 overall.
Australia has won 12 of the teams' past 14 meetings over the last 11 years, while New Zealand won all but three of their 18 contests in the preceding 20 years.
The Jillaroos will be favourites on home ground in Brisbane, but Kiwi captain Georgia Hale said her team was focused on the challenge rather than the record.
"We're right where we want to be, but the Jillaroos are the best and we want to beat the best," she said on Tuesday.
"The pack we have, the flair and speed we have ... absolutely they are so beatable."
"Every team has cracks and flaws."
"We've beaten them before, and I remember that feeling and it's one we want to grasp on Sunday."