Preheat your grill for indirect heat. Mix all Dry Rub ingredients together with your fingers to break any lumps of sugar and apply a generous coating on all surface of the pork roast.
Place roast on grill's indirect heat and cook until internal temperature reaches 150°F on an instant read thermometer. Cook time should take approximately 2 hours at 350°F.
While the roast cooks, mix all Coffee Bourbon BBQ Sauce ingredients in a saucepan and simmer for 20 minutes.
Glaze the roast near the end with Coffee Bourbon BBQ Sauce and sear over direct heat for 30 seconds.
Take out of the grill and let rest for 15 minutes. Slice the roast between bones to make individual chops and serve.