Preheat the oven to 300 degrees. Rub the BBQ spice mix on the front & back of the ribs. Wrap individually in aluminum foil, & bake for 2.5 hours. Let rest for about 10 minutes before unwrapping.
While the ribs are cooking, combine all of the whiskey glaze ingredients in a medium saucepan. Bring the mixture to a boil, then reduce heat. Simmer for at least 1.5 hours, stirring occasionally.
Preheat your grill on high heat. Remove the racks from the foil, & place on the grill. Grill for 3-5 minutes on each side, basting each side with the whiskey glaze before they come off of the grill.