Debbie'S Aunt'S Cake
["4 large eggs, at room temperature", "1 c. sour cream", "1/2 c. vegetable oil", "1 (18.25 oz.) box yellow cake mix (without pudding added)", "1 (3 1/4 oz.) box instant vanilla pudding", "12 oz. (about 2 c.) semi-sweet chocolate chips", "1 (4 oz.) bar German's sweet chocolate, grated", "1 1/2 Tbsp. confectioners sugar (for garnish, optional)"]
["Position a rack in the center of the oven and preheat to 350\u00b0. Lightly butter and flour a 12-cup fluted tube pan."]
["eggs", "sour cream", "vegetable oil", "yellow cake", "vanilla pudding", "semi-sweet chocolate chips", "'s sweet chocolate", "confectioners sugar"]