Coffee Cake 2

1 box Duncan Hines golden butter cake mix
1/2 c. sugar
3/4 c. oil
4 eggs
1 tsp. vanilla
1 c. sour cream
1 c. nuts

Mix all ingredients together and pour half of the batter into a greased tube pan.
Mix together 2 teaspoons cinnamon and 4 tablespoons brown sugar and sprinkle it over the first half of the batter in the tube pan.
Then pour the remaining half of the batter over the cinnamon mixture. Bake at 350° for 1 hour and 15 minutes.