2 3/4 cups cake flour
1 1/2 cups white sugar
1 1/2 teaspoons baking soda
3/4 teaspoon salt
1/2 cup butter, softened
1/4 cup shortening
1 1/2 cups buttermilk
3 eggs
 1 cup golden raisins, chopped
1/2 cup chopped walnuts
1 tablespoon orange zest
1 1/2 teaspoons vanilla extract

350 degrees. 9x13 inch pan. 40-45 mins.

Beat all ingredients.

Frosting:
1/2 cup butter, softened 
12 teaspoons orange juice (squeeze from fresh     orange) 
1 tablespoon orange zest 
4 1/2 cups confectioners' sugar