Combine softened ice cream and whipped topping until well blended. Reserve 8 whole Whoppers for garnish, crush remaining Whoppers.Add 1 cup crushed candy to the ice cream mixture;reserve remaining 1/2 cup of crushed candy.Spoon ice cream mixture into pie crust.Top with reserved crushed candy and freeze 4 hours.To serve, garnish with whipped topping and 8 whole Whoppers.Serves 8.