Preheat oven to 350 degrees. Beat eggs until light. Add oil, sugar and zucchini. Sift in remaining ingredients. Blend well. Add nuts or raisins. Pour into well-greased tube or bundt pan and bake for 1 hour, or until toothpick inserted in the center comes out clean.
Icing: 1 cup sugar, 1/4 c. shortening, 1/3 c. milk, 4 T. cocoa, dash of salt, 1 tsp. vanilla. Bring first 5 ingredients slowly to a boil, stirring so ingredients dissolve before a boil is reached. Boil 1 minute; cool. Add vanilla. Stir while it thickens (this can take several minutes). Pour or spread on cooled cake. Double this recipe if using for a layer cake.
Another frosting: 1 - 3oz. pkg. cream cheese, softened, 2 c. sifted powdered sugar and 1 T. butter. Mix well and spread on cooled cake.
This makes a lot of batter. Apparently, all bundt pans are not equal! My bundt pan measures 10" in diameter and 3 7/8" high. Hope this helps!