Sift together the flour, salt, baking soda, baking powder, and cinnamon. In a separate bowl, mix the oil, sugar, eggs, pumpkin, and vanilla. Blend with the dry ingredients. Add the chopped nuts and chocolate chips. Pour into a 9" by 13"
baking pan. Bake at 350°F for 25 to 30 minutes or until done. Frost with a cream cheese frosting or chocolate frosting. Freezes beautifully.