Pumpkin Spice Muffins

Name: Pumpkin Spice Muffins
Ingredients: 4 eggs; 1 3/4 cups sugar; 1 cup vegetable oil; 2 cups pumpkin puree; 2 cups all-purpose flour; 2 teaspoons baking powder; 1 teaspoon baking soda; 1/2 teaspoon salt; 2 teaspoons cinnamon; 1/2 teaspoon ginger; 1/4 teaspoon nutmeg; 1/4 teaspoon cloves; 1 cup golden raisins*; 1/2 cup chopped walnuts (optional)