Marcelo Bosch starts at outside centre in place of Gonzalo Tiesi, who has been ruled out of the tournament after suffering knee ligament damage in the 13-9 defeat to England.
Martin Rodriguez moves from full-back to inside centre, allowing Santiago Fernandez to move in one place to fly-half while Felipe Contepomi recovers from bruised ribs.
As a result, Lucas Amorisino starts at full-back and the Pumas will be captained by number eight Juan Martin Fernandez Lobbe for the seventh time.
Argentina have picked the same forward pack that dominated England for large parts of the opening game.
Argentina: L Amorosino; G Camacho, M Bosch, M Rodriguez, H Agulla; S Fernandez; N Vergallo; R Roncero, M Ledesma, J Figallo, M Carizza, P Albacete, J Farias Cabello, JM Leguizamon, JM Fernandez Lobbe.
Replacements: A Creevy, M Scelzo, M Galarza, A Campos, A Lalanne, N Sanchez, J Imhoff.
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The Barbarians are one of the top invitational rugby sides with a long history and classic rugby jersey.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
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The Lions are ready to get their Australia tour underway. They arrive in Perth on Monday.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.