[dsraven]

on mine I needed every patch panel sold aftermarket.
I would look closely at the underside of the floor where the cab mounts are. should be flat fore to aft and side to side. if it rotted it gets weak and the floor takes up the slack it seems. also the A pillar where the hinges are, below the floor level. remove the inside cover that goes floor to dash on the pillar and have a look inside there, it's where they usually hide the thin metal, haha. also the front-upright-side to side panel part on the step below the hinges. it's where the cab mount spot welds on and it is a few layers deep so it tends to hold moisture and rot out.
post up some close ups of what you have. the rest looks pretty good (?) from the last pics posted.