Cool, good to know someone has proper heavy-use experience with them and they held up fine! But there is the legality issue as Towcat mentioned... Just yet another thing to consider I guess, but but even so it's still better than most of Europe where God forbid you even think of installing a lift kit on you truck
Was the '90 a 4x4 conversion of a pickup truck, or a factory 4x4? If it was factory that means it was a cab-chassis truck, so possibly automatic commercial status at the DMV? Now if both we pickup-framed, or both were cab-chassis, then it would make no sense for one to be commercial and the other not.
Yet even with the load spread across so much rubber their "paved" roads are still so bad that after only half an hour on them one seriously begins to consider getting off the interstate and running the dirt roads instead... US-23 comes to mind here, you really don't need the sign to tell you when you crossed from OH into MI
Ironically I80 is the same way within a single state in some areas, you immediately know when you cross between poor counties and more well-to-do ones.