Cream butter; add sugar; cream together. Add eggs, one at a time, beating well.
Sift together flour, baking powder, baking soda and salt; add to first mixture,
alternating with sour cream. Begin and end with flour mixture. Stir in vanilla extract.
In small dish, mix sugars, pecans, cinnamon and 2 tablespoons butter. Pour 1/2
of batter in greased 10-inch tube pan. Top with 1/2 sugar mixture. Pour in rest
of batter and top with rest of sugar mixture.