Combine flour, sugar, vanilla, margarine, and oil. Mix well. Remove 1 1/2 cups and set aside to use for topping. Add eggs, juice, and cinnamon and flour/baking powder mixture. Mix well. Add oil, water, cocoa, confectioners sugar. Incorporate well. Pour into lined 10x16 pan. Top with reserved crumbs.

Bake at 350 for 45-60 minutes.