Rolds72

Ok I need to ask what wheel size will work with a disc conversion kit that's for a nova 11" rotors I've been told some olds rims that are 15s still won't clear calipers I've held off buying rims and tires but want to get on with the front end work please advise are different brands of rims different sizes I only get one shot at ordering rims and tires so it needs to fit!!!!!