Grease 2 9 inch pans.

Preheat oven to 350 degrees.

Combine cake mix, eggs, water and oil.

Bake 25 minutes.

Meanwhile combine brown sugar, 2/3 cup whipping cream and butter in sauce pan. Cook over medium heat stirring constantly until mixture comes to a boil. Reduce heat. Simmer stirring constantly for 1 minute. Cool to room temperature.

Drizzle 2 tablespoons sauce over each layer.

Place remaining sauce in bowl. Add powdered sugar. Beat on high til smooth, 3 minutes. Add enough whipping cream for spreading consistancy.

Place 1 layer on plate. Spread with 3/4 cup frosting. Sprinkle with chopped pecans.

Top with second layer. Spread top and side with remaining frosting. Arrange pecan halves on top.