83 C-10 shortbed looking for a new home

[dmjole]

I moved this thread over to here from the wrong place (sorry, I am new still here and still figuring out where things are.

I have a 1983 short bed C-10 (inline 6 cyl, 3 speed manual transmission--L, 1,2,3). It's a 2wd vehicle, and used to be a U.S. Forest Service fleet truck (still has Forest Service green paint job on it.)
Here it is, in all its 22 year old Forest Service Green glory:


It has a 2bbl carburetor on it, and was originally sold as a High Altitude vehicle (the vacuum line diagram sticker near the radiator shroud is quite legible, and I have a digital photo of it if anybody needs a High Altitude DNJ vacuum line digram.) It has power steering, no AC, no tilt wheel, no internal gauges (other than speedo and fuel tank), although it does have the four round idiot light panels. It has a trailer hitch on it, and an after-market electric trailer brake. There have been 3 owners--the US. government, my father, and me. I have complete service records for this vehicle from 1997 to present.
In 1997, My wife and I drove in this truck from the West Coast of the USA to the East Coast, drove it for 3 years in Eastern Canada (where they salt the roads heavily in the winter) and back again--the 2nd time (Ohio to Oregon) pulling a trailer. It's got over 200,000 miles on it.

We just learned this week that piston #3 has very little compression, and it's time for a rebuild. The truck doesn't exactly drive too well on 5 out of 6 pistons, as you may imagine.
I also know that I need to replace the front rotors, the radiator, and the water pump (got a little leak up there). There is some surface paint rust in places, and some damage to the outside rear wheel wells (due mostly to a younger brother of mine driving it in the snow, with tire chains, and not fastening them down correctly...)

So, now that you've met my truck, what I want to know is this--What would you folks say is going to be an average engine re-build cost? Do I dare tackle it myself? I do not have easy access to a shop, nor rebuilding experience.

I am thinking that it may be time to find a new home for our truck, which has been like a son to me and treated us well. What is the market like for this vehicle? Are there folks out there looking for a short bed of this vintage to modify? I am located in Washington State, in Tacoma (south of Seattle).