Beagles Bordeaux winger Rafael Carballo, Tucuman RC second rower Santiago Guzman and Dax scrum-half Nicolas Vergallo join the squad.
BBC: Scotland captain Chris Cusiter returns from Argentina
2.
Federico Serra and Rafael Carballo scored in the corners and after Mark Hopley crossed, Carballo touched down again before Horacio Agulla's late try.
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3.
That only fired the Pumas and Serra scored their opening try, after good work in midfield from Martin Gaitan, before opposite wing Carballo bagged his first touch down.
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