Preheat oven to 425° F.
Whisk together sugar, pumpkin pie spice and salt, in small bowl, and set aside.
In a large bowl, whisk the eggs and the pumpkin until combined. Whisk in the sugar-spice mixture until combined. Then gradually stir in the evaporated milk and bourbon until combined. Pour the mixture into the unbaked pie shell.
Bake for 15 minutes. Then reduce temperature to 350° F, and bake for an additional 50-60 minutes or until toothpick inserted near center comes out clean.
Cool on wire rack for 2 hours, then refrigerate until ready to serve. (The pie will slice easier if chilled.)