I have a BQ Grills 36 x 48 and that is about small as you want to go for a
110 lb pig (less head and feet). Talk to John at Alveron Cookers he will build about anything you want. When I took the cooking class in Summerville we cooked a whole pig on one of his charcoal cookers and it turned out nice. Like someone said a Lang 84 with double doors and slide out rack would be an option also.
OTG / Cajun Bandit