4 eggs
3/4 c. oil
1/2 pt. (8 oz.) sour cream
1 pkg. Duncan Hines butter cake mix
1 pkg. instant pistachio pudding
1/3 c. Hershey's syrup
cinnamon and sugar

In large bowl mix all but last 2 ingredients. Pour 2/3 of batter into greased and floured tube pan. Sprinkle with cinnamon sugar (as much as you like). Into remaining batter, mix Hershey's syrup. Pour over other batter in pan and swirl with knife. Sprinkle top with more cinnamon sugar. Bake at 350 degrees for 50 to 60 minutes.