Not sure if this has been posted before, but you Folks that are interested in Fords camper recommendations concerning using truck campers this is a very complete list of each truck, axle ratings, how individual factory installed options effect cargo capacity as well as general info on the first few pages. Pretty cool. 128 page PDF, so might not want to try it on a real slow connection.
While your link may be confusing to some, I find the little paper included in the owners manual to be simple and to the point. It is included with trucks equipped with the camper package. All you need to figure out is the number of folks you will carry and add or subtract their weights, remembering that Ford uses 150 lbs for each person, so some adjustment will be needed.
2005 Ford F-350 CC Dually 6.0L Diesel 4x4 King Ranch loaded, Supersprings, Coolant filter, Oilguard bypass filter.