Acasuso's inclusion was the only change to the team that beat Russia in September's semifinal, with David Nalbandian, Juan Martin del Potro and Agustin Calleri keeping their places, the Argentine Tennis Association said in a statement.
Del Potro, 20, is Argentina's highest-ranked player at No. 8 in the world, followed by Nalbandian, who is eleventh.
Canas has dropped to 77th while Acasuso is 48th.
Argentina, unbeaten at home for 10 years, has reached the final for the third time but has lost its previous two, against the United States in 1981 and Russia two years ago.
The Nov. 21-23 final will be staged indoors at the Islas Malvinas arena in the resort of Mar del Plata. The decision has angered Nalbandian, who wanted to play in his hometown of Cordoba.