the components are plenty strong enough for their intended use,my issue is with how variable the loading can be on these heavier trucks.
with a one ton truck,there is a large difference between the loaded weight and the empty weight,and while most of this load goes over the rear axle,a certain component of it ends up over the front axle as well.
the alignment of the ttb is hieght dependant,so a loaded truck will need a different alignment than an unloaded truck.this is less of an issue with lighter trucks,such as the ranger and even f150,but if an f350 is aligned properly,then a camper(or other large load)is put on it,then it is taken on a long road trip,for the duration of that trip the alignment will be out,unless the truck is re-aligned for the load.then it will need to be re-aligned again when the load is removed.
this also happens,but to a lesser degree,with sla systems,but not with a solid axle.
this is why i question the suitability on trucks designed to carry heavier loads.and,i'm sure,why ford only used it on the f350 for a few years.