In a mixer, combine margarine, brown sugar and eggs. Beat until smooth. Add baking soda, cloves and cinnamon. Add buttermilk, and then slowly add flour. Beat until smooth. Add raisins and stir by hand into batter. Pour in 9 x 13 x 2 greased long cake pan. Bake at 350 degrees for 30-35 minutes. Test with a toothpick for doneness.
Use the following recipe for the icing after cooling: