Preheat oven to 375 degrees F. Set a rimmed baking sheet in the oven and let it preheat with the oven. Don't forget about it!
Have ready an unbaked 9 inch pie crust.
In a mixing bowl, using a hand held electric mixer, beat the sugar and butter until well mixed. Add the eggs and beat on medium high until light. Beat in the corn syrup, salt, bourbon and vanilla. The batter will be very pale at this point.
Sprinkle the nuts and chocolate over the bottom of the pie crust, then pour the egg mixture over.
Immediately set on the preheated baking sheet. Bake at 375 degrees for 45 minutes. Time may vary depending on the type of pie dish you use.
Allow the pie to cool for several hours. If you want to solidify the chocolate, let cool, then chill, then bring back to room temperature.