I'm doing one today on a Bandera.
Rub:
1 cup brown sugar, 2 T pepper, 2 T salt, 2 T Paprika, 1 T chili powder, 1 T Lemon pepper, 1T cumin, 1T garlic powder. If it is too spicey add more brown sugar, if you want it hotter add more chili or a little cayenne.
FYI: I take the butt (I prefer...