This is just my customized version of the Texas Pork Ribs recipe on this site. I wanted the rub without the sauce ingredients or instructions, so I altered someone else's customized version. Someone else has probably already done this.
Clean the ribs, and trim away any excess fat. In a medium bowl, stir together the sugar, 1/4 cup salt, ground black pepper, paprika, 1 teaspoon cayenne pepper, and garlic powder. Coat ribs liberally with spice mix. Place the ribs in two 10x15 inch roasting pans, piling two racks of ribs per pan. Cover, and refrigerate for at least 8 hours.
Preheat oven to 275 degrees F (135 degrees C). Bake uncovered for 3 to 4 hours, or until the ribs are tender and nearly fall apart.
Preheat grill for medium-low heat.
Lightly oil grill grate. Place ribs on the grill two racks at a time so they are not crowded. Cook for 20 minutes, turning occasionally. Baste ribs with sauce during the last 10 minutes of grilling, so the sauce does not burn.