Bake cake according to directions in long pan. While hot, poke holes about 1 inch apart in cake with handle end of knife. Pour Eagle Brand milk in holes. Pour in Coco Lopez over Eagle Brand milk in holes also. (and all over cake). Use 1/2 frozen coconut on top of cake. Cool 30 minutes. Apread Cool Whip over coconut. Sprinkle rest of coconut over that. Chill 8 - 12 hours before serving.