Went to see it. Pretty much everything was as advertised. No rust at all like he said. Frame, body mounts, door panels, cab corners are all clean. Used my magnet and found no bondo. Additionally, either the steering components were impeccably maintained or they had been replaced as well since the center link, tie rods, pitman arms, etc., all still had paint on them. The pictures didn't capture some of the paint blemishes well. Ended up having some hail damage on the hood and roof, no paint chips but the clear coat was damaged. I am not too bothered by that. Did a long-ish test drive in the mountains (40 miles). Accelerates well, moves through all the gears, no problems uphill. Stopping is fine, but I do understand now why some people dislike the long brake pedal travel on these. 4WD works. There is a little bit of looseness to the steering when going straight and level. Oil looked recently changed so that gave some pause. The paperwork showing the engine and trans being done matches the vin. The engine is very smooth and quiet at idle which matches with a low miles engine. There is a slight whine when under light throttle that the guy chased for two years. He was told it might be a "ring and pinion" in the rear axle. He bought a junkyard axle and replaced it, but the sound remained. To top it all off, he had a box of parts and documents detailing the work done on the truck. I only verified the engine and trans with the VIN however.
In the end I did buy it from him for $6400. I drove the truck home 400 miles and it handled it well. Got something like 19-20 mpg. I may do a brake upgrade, attempt to tighten the steering up, or repair/PM the clear coat damage. All in all, I am happy with that price and I intend to hold onto it for a while.