The All Blacks played test veteran loose forward Jerome Kaino at lock in the 40-29 defeat two weeks ago after starting locks Sam Whitelock and Brodie Retallick were ruled out with injury.
"I think they'll be really, really pumped up for this one. I'd say they'll do a little bit more research behind the scenes on us. I'd say they were a little bit under-cooked in that department and, from my own perspective, some of the selection mistakes that they made they won't make them again," Fitzgerald said.
Fitzgerald expects Ireland to use a similar gameplan that worked so well in Chicago, starting with dominance at scrum time.
"The things we did well, we can definitely do again," he said. "I think the pressure we got on all around the park, the desire we showed... I think in front of a packed Aviva Stadium we can definitely do that again."
The last time the All Blacks played in Dublin they needed a last minute try from Ryan Crotty and a sideline conversion by Aaron Cruden to steal a late win.
The All Blacks have played 15 tests against Ireland in Ireland, winning 14 with just one draw.