Pistachio Pudding Cake

1 pkg white cake mix
1 pkg instant pistachio pudding
1 cup club soda
1/2 cup finely chopped walnuts
1/2 cup oil
4 eggs

Topping
1 pt heavy cream
1 pkg instant pistachio pudding
3/4 cup milk
2 tsp sugar

Cake: Blend eggs, oil and club soda. Add cake mix and pudding. Beat until creamy. Add chopped nuts. Preheat oven to 350 degrees. Bake in a greased and floured tube pan 45 to 50 minutes.

Topping: Mix all together and beat until creamy.