preheat 325

coat 12" bundt pan with veg oil

combine butter and sugar, beat till light and fluffy; add sour cream and eggs and vanilla

combine pecans, brown sugar, sugar, cinnamon and salt

spoon shallow layer of filling over bottom of bundt pan. spoon half the batter into pan.

sprinle all but 1/4 C of remaining filling over the batter

pour rest of the batter over filling. sprinkle with remaining filling

bake 50 to 60 minutes, or until cake pulls away from the sides