In A Large Bowl Cream Together Butter And 1 Cup Sugar Until Light And Fluffy. Add Eggs, 1 At A Time, Beating Well After Each Addition. Sift Flour, Soda, Baking Powder, And Salt Together. Add To Creamed Mixture. Beat Well Until Mixed Completely. Add Vanilla And Sour Cream. Mix Well. Topping: Combine Nuts, 1/3 Cup Brown Sugar And Cinnamon. Place 1/2 Of The Cake Batter In A 9 X 13 Greased Pan. Top With Half The Topping. Repeat Again. Bake At 350 Deg F. For 25 Minutes.