1Preheat oven to 350 degrees. Grease and flour 10" bundt pan. Heat corn syrup. Stir in coconut and 1 teaspoon vanilla; set aside. Combine cake mix, pudding mix, eggs, oil, water and remaining teaspoon of vanilla. With electric mixer on low speed, beat for 30 seconds. Beat on medium speed for 2 minutes. Pour 1/2 of cake batter into pan. Drop dollops of coconut mixture onto batter. Cover with remaining batter. Bake for 50-60 minutes or until a toothpick inserted comes out clean. Cool for 10 minutes before removing from pan to cool completely.
2Frosting: In medium saucepan, bring cocoa, butter and milk to a boil. Beat in powdered sugar. Add sour cream and vanilla. Frost cooled cake.