One of the first things I noticed when I saw those pics a few months ago, it has a KenneBell coil bracket, the coil was relocated to clear the snout on the blower, and the intake plate missing, KB as with many other blowers were known to pop headgaskets if the owners didn't retard the timing or get a tune etc. I saw the auction listed mechanical as damage1, body as damage 2, that and low miles made me wonder if it had blown a head gasket, chipped a piston etc and got parked a long time.
Very curious to what, if any engine damage it may have. The truck is a unicorn, it's worth restoring well. I would guess it's the lowest mile full effect out there also, IMO.
mine being the highest mile probably at over 450 k miles or who knows, I had the odo do the reset on mine once that I saw, could have done it before ?? lol.
I grew up in Renton, been in Federal Way for last 22 years, you would be discusted to see how far this region has gone to chit since you left.