You know, when you're just sitting there in your lawn chair in the warm sun, my mind has wondered in that direction a few time. In my day dreaming I'd cut the frame in front of the first rear axle to add enough length to the frame to fit another fuel tank in there.
This should also add enough to put a very small 5th whl trailer up there. The main idea behind that is to have just a little more room and enough room for a comfortable chair so you don't have to sit at the table all of the time.
Of course a new air ride seat for the cab and air conditioning - we don't want to rough it too much.
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.