All Blacks coach Scott Robertson is banking on back row beef and a reinforced bench to deliver another Rugby Championship win over Argentina on Saturday to send his squad home with momentum for a highly anticipated showdown against South Africa.
After a comfortable 41-24 win over the Pumas in Cordoba, Robertson is keen to see what huge loose forward Simon Parker can bring on his test debut at No 8 between the similarly bulky Tupou Vaa'i and Ardie Savea.
With Savea reverting to No 7, the relatively lightly built fetcher Du'Plessis Kirifi makes way in Robertson's push for power.
"We needed a bit of battle-hardened cohesion in our group and also the opportunity for Simon," Robertson told reporters in Buenos Aires.
"He's consistent, really accurate and in the last two weeks he's trained really well. He's ready for it."
With mobile big man Vaa'i now established at blindside flanker after playing mostly at lock, the bulked-up back row has been seen as a longer-term plan to muscle up to world champions South Africa in the collisions.
Having lost both tests and their title to South Africa last year, the All Blacks will hope to knock them out of contention on home soil next month following the Springboks' shock loss to Australia at Ellis Park.
That would, of course, mean heading home with a 2-0 record over the Pumas, who crept within seven points during a second-half surge after a slow start in Cordoba.
Robertson will hope the return of loose forward Wallace Sititi, World Rugby's "Breakthrough Player of the Year" in his debut 2024 season, and prop Taimati Williams on the bench can buttress the visitors against a Pumas fightback.
"Yeah, some big bodies," said Robertson of the duo who play their first tests of the season after injury-disrupted starts.
"If you look at the timing of this test series, for them to get back for this match is really important."
While the All Blacks have started the season with four successive test wins, including the 3-0 home whitewash of France, Felipe Contepomi's Pumas desperately need a victory to prevent a costly slide down the world rankings.
With the top six sides at the end of the season assured of a more favourable draw for the 2027 World Cup, seventh-ranked Argentina are in danger of losing touch with sixth-ranked Australia.
Making only two changes to his starting side, Contepomi has demanded more from the Julian Montoya-captained squad that showed signs in Cordoba but never really troubled the New Zealanders.
Despite defeating the All Blacks three times since 2020, the Pumas have never beaten them on home soil and will need a big lift in performance to break the drought.