In large mixing bowl, blend together cake mix, sour cream, oil, 1/4 cup sugar, water and eggs.
Beat at high speed for 2 minutes.
Pour 2/3 of batter into pan.
Combine filling ingredients and sprinkle over batter in pan.
Spread remaining batter evenly over filling mixture.
Bake at 375 degrees for 45-55 minutes, until cake springs back when lightly touched.
Cool for about 25 minutes; remove from pan and glaze.
High Altitude: When baking at high altitudes, Stir in ½ cup flour into mix. Mix as directed above using the sour cream, 1/3 cup oil, 2 tablespoons Sugar, 2/3 cup water, and 4 eggs, Bake at 400 until done. 40-50 minute Be sure to use oil as some other brands cause the cake to fail.