Tetaz Chaparro played in the opening 37-15 loss in Port Elizabeth but missed the return fixture with a head injury.
Hourcade has revamped his outside backs, brining winger Santiago Cordero and centre Matias Moroni in for Ramiro Moyano and Matias Orlando respectively.
There are also twin changes in the loose forwards, where rising No.8 Benjamin Macome replaces veteran Juan Manuel Leguizamon and openside specialist Javier Ortega Desio is introduced in place of Tomas Lezana.
Lock Guido Petti replaces Tomas Lavanini, who wasn't named in the 29-strong tour squad after being sent off during the loss in Salta.
The side is laced with players from the Jaguares Super Rugby team is led again by world class hooker Agustin Creevy.
The Pumas have never come close to winning in their 13 previous Tests in New Zealand, going down by at least 15 points in all of them.
Last year they were thumped 57-22 in Hamilton.
Pumas: Joaquin Tuculet, Santiago Cordero, Matias Moroni, Jeronimo de la Fuente, Emiliano Boffelli, Nicolas Sanchez, Tomas Cubelli, Benjamin Macome, Javier Ortega Desio, Pablo Matera, Matias Alemanno, Guido Petti, Nahuel Tetaz Chaparro, Agustin Creevy (capt), Lucas Noguera Paz.
Reserves: Julian Montoya, Santiago Garcia Botta, Enrique Pieretto Heilan, Marcos Kremer, Tomas Lezana, Martin Landajo, Santiago Gonzalez Iglesias, Matias Orlando.
- NZN