After eading the last few pages, all I have to add, is the mpg I pulled like clockwork out of my 87 5.0 NP435 3.54 geared 235/75/15 Bronco was a high of 16.9, and an average of 16.1
A diesel (PSD) Centurion would see that, and then some all day long. My commute was 60 miles a day in the Bronc, and it cost me $11 a day in fuel, workload cut back, and I had to change jobs, as fuel then became prohibitive.
IF one was entertaining the idea of a larger rig, I would look at a Cummins quad cab short box, with a stick, keep it 12valve for simplicity, and then you would have XJ/Toyota mpg at the cost of slightly more for fuel on occasion, the market equally favors and punishes you for driving a dismal.
If one was looking at a SUV, again, I like a full size, either the afore mentioned Cent, or a 6.5 Suburban
If one was looking to build there own, a 60/80 series Land Cruiser with a 4bt (4cyl version of the 6cyl Cummins) would be my choice, hands down.
If kids/back seat needs weren't a factor, either a Patrol or a 40 with the 4bt would win for me.
There is a nice Patrol running around here GM60/14bolt axles, H1 beadlocks, and H1 37's... HONEY!!!!!!!!!!!! of a truck.
THe topless aspect of the last two may get me looking at a tagalong trailer, if I were to settle for a 40/Patrol with a 4bt.
Now we have Sammy grade mpg, more room than a crampy XJ or runnah (IMHO, I am 6'0" 180# carry 3 kids and a lab with me, where do I put the Camping/recovery gear in an XJ or runnah?)..
Plus with any of the dismals mentioned, you can jump on the WVO, WMO, bio etc. etc. etc. bandwagon.