1 pkg. yellow cake mix
1 pkg. instant vanilla pudding mix
½ cup vegetable oil
½ cup water
4 eggs
1 cup sour cream
¾ cup milk chocolate chips (or 4.65 oz milk chocolate candy bar, chopped)
1 cup semi sweet chocolate chips
1 cup chopped pecans
1 cup shredded coconut (you can leave this out if you aren’t a coconut fan)

Combine cake and pudding mixes, oil, water, and eggs at low speed until moistened.  Beat 2 minutes on high; blend in sour cream.  Stir in remaining ingredients.  Pour into a greased and floured bundt pan. 
Bake at 350 for 60-65 minutes, until a toothpick inserted near the center comes out clean. 
Cool in pan 15 minutes before removing to wire rack.  Cool completely.  Chill before slicing, if you can stand to wait that long.