1 pkg. white or yellow cake mix
4 eggs
1 c. orange juice
1/2 c. oil
1 box Royal instant pistachio pudding

Mix above ingredients on low speed for one minute, then on higher speed for 3 minutes until well blended. Pour 2/3 of batter in well greased and floured bundt pan. Add 3/4 cup Hershey's chocolate syrup to remaining batter. Mix well and pour over other batter. With knife cut through both batters for marbling. Bake one hour in 350 degree oven. Cool right side up for 25 minutes, then remove from pan. Frost if desired.