A "what if" kinda question (sorry so wordy)

[TeamRinaldi]

Right, so I've got my '85 C-10 which is in the process of basically becoming a 1ton. New motor, trans, gearing, all the goodies. I'm post Airforce Aviation and am planning on buying a trailer and traveling the U.S. with old blue and the family. So I've been looking at setting up the suspension and whatnot, and I got to thinking. If I'm going to beef the heck out of the suspension and go with a "holy crap" hitch, why not just go with a fifth wheel? The question is, with all the suspension work, would I need to mod the frame at all? There's got to be more than just bolting in the hitch adaptor. I know a real 1ton has a different frame. Has anyone tried this, or have I been listening to the voices to long? As always, thanks for the help.