Preheat oven to 350F. Grease and flour 20-inch bundgt or tube pan.
For cake: combine cake mis, eggs, 1-1/3 cups orange juice, oil and cinnamon in large bowl. Beat at medium speed with electric miser for 2 minutes. Stir in 1/2 cup walnuts. Pour into pan. Bake at 350F for 40-50 minutes, or until toothpick inserted in center ocmes out clean. Cool in pan 25 minutes. Invert onto serving plate. Cool completely.
For glaze: combine frosting and 1 tablespoon organge juice in small bowl. Stir until smooth. Drizzle over cake. Sprinkle with 1/4 cup walnuts.
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