For anyone who still cares, I went ahead and purchased the truck. Now to get the KDP done. The truck seems to run really well, pulls all the way to 27-2800rpms. I think I'm going to like the 4.10 gear - 315/75/R16 tire combination. I'm not sure a 3GSK would make a big difference on this truck, but I may eventually give it a try.
The $9875 I paid was probably a fair price. Not great, not too high, just fair. The truck does have a few what I consider to be minor issues, which being 9 years old with over 180,000 miles I would expect. It needs
A new windshield ($260 installed from Airport Glass)
Fuel level sending unit ($60 from Dwayne Lane's Dodge, can probably do better)
Passenger side power window switch ($45 from Dwayne Lane's, can probably do better)
I want to change the VSS/speedo drive gear to correct the speedometer ($30 from Dwayne Lane's)
KDP ($50 for a kit from TST or $3 for just the tab from Cummins)
The cruise control and HVAC controls do not work, found a broken vacuum hose under the driver's side battery that when fixed should cure the problem (hopefully free)
Not sure if the truck needs new shocks or if it this is just the way it rides.
Has typical 2nd Gen steering slop. It does not have newer TREs as I previously thought. So those, work to the track bar, and a DSS are somehwere off in the future.
The canopy has a small crack in it that I will patch with fiberglass.
The tires are down to probably 25-30%. I'm thinking Toyo Open Country M/Ts when that time comes.
And getting the bed Line-X'd.