Training Camp DopeCubans Look GoodNEW ORLEANS — The New York Cubans entered their third week of training here last week with several newcomers from the Mexican League showing good form.Topping the list of 1947 Cubans are Claro Duany and Jose Cabrera, the latter replacing Dave (Showboat) Thomas, who has moved his activities to the Pasquel circuit Holdovers Back in the fold are being paced by Silvio Garcia. Rabbit Martinet Impo Barnhill, Lou Louden and Tite Minosa.