anguswilly
+1y
I've pulled these beds off many, many times.
There are 3 bolts per side, the last two you probably are looking for are under the very end of the frame rails near where the bumper bolts would be.
You need to remove the fuel filler hoses (2) and the best way is to pull the hoses off because every single one I have done in 10+ years, the phillips head bolts will break off in the fuel filler receptacle ( the ones behind the gas door) I usually just destroy the original hose clamp on the big one and the little spring clamp type one will come off pretty easy.
No need to touch any brake lines, and you just unplug the tail light and license wires.
As far as the bed bolts, soak them real good with liquid wrench or PB blaster, do it well in advance - even soak them a few times over a week or so - they should come out, I use an impact gun.
I'd remove the bed, then pressure wash the frame really good, next let it dry and spray it down with rust mort, this will stop the rust process and convert the surface to a hard oxide finish that you can paint or leave - either way it's about the only way to turn back the clock on rust.