Prepare the pie crusts.
In a large mixing bowl whisk the sugar with the ground spices and salt until combined well.
Add the pumpkin, eggs, evaporated milk and condensed milk to the bowl.
Bake the pies at 450°F for 15 minutes. Then reduce the oven temperature to 350 F. degrees and bake for an additional 45 to 50 minutes or until the center of the pies are set.
Remove the pies from the oven and transfer to a cooling rack. Cool the pies completely.
Once the pies have cooled to room temperature. Cover with plastic wrap and refrigerate at least 2 hours before serving.