Spread ice cream into pastry shell. Cover and freeze until firm. In a bowl, combine pumpkin, sugar, cinnamon, salt and nutmeg; fold in whipped cream. Pour evenly over ice cream; cover and freeze until firm.
For syrup, combine brown sugar, water and corn syrup in saucepan; bring to a boil. Boil for 4-5 minutes, stirring often. Cool; stir in extracts. Drizzle over pie.