To add an additional bit of reality I give you the following. Bought a deuce at Redstone...pig in a poke. Had a recommended diesel shop there pick it up and go over it...new fluids/filters/ and hoses [as approp], road tests, inspections for worrisome leaks, brake checks, etc. Drove it to Tucson w/o substantial problems [lost alternator belts. slight brake fluid leads in two hubs, slight heat increase in one rear hub near the end]...2100 miles.
Once home: replaced two sets of bearings, re-packed the rest, new seals all around, cleaned everything from the axle out; rebuilt all of the brake cylinders, flushed the lines, and changed to DOT5; replaced the front boots with funky green silicone ones; pulled the seats, cleaned and jabscoed and rustoleumed as deemed needed in the cab and selected spots on the bed; greased every zerk I could find; bought some new tools; and replaced a lot of bolts/nuts/studs/washers. Also got to know hardware, tool, and lubricant suppliers well. Ran 30-mile freeway tests until re-doing the keyway seals in 2 or 3 of the rear hubs, and finding and inserting 0.040-in shims in 3 or 4, resulted in cool hubs all around. This was a substantial learning experience...first timer deuce owner; not overly mechanically experienced.
Then, drove to sw Oregon and back to pick up an 8K# boat...~2300 miles. Only thing I did enroute was to add fuel [and outboard oil] and, incrementally, 3 quarts of Lucas to the crankcase...made the ups a lot quieter on the return leg. Averaged about 8.4 mpg for the trip. Slight leaks showed on the inner front rears on the way back, but hub temps did not rise. Got 'em off now to clean/re-pack and change to cork seals...fool me once shame on you; fool me twice, shame on me.
The bottom line is that if you think that your truck is reasonably tight, drive it without trepidation, but prepare for potential griefs. Took me a while to get to that point. I travelled with fuel filters, oils, grease, spare bearings and outer seals, cribbing blocks, deuce-relevant tools, and a 50-ft air line w/filler. Only things I used were the air line and a few tools for trailer adjustments.
Have at it and enjoy,
bs