Sounds like a cool project, will be watching as you progress.
Both trucks look pretty good, yellow one seems like the better of the two...
At one point I had picked up a set of F350 superduty axles (dirt cheap) I thought I might use, but ended up selling them mainly because I was going to run lower gears (had 3.54s), I still don't know what axles i'll run
CUCV axles are certainly a great choice, 4.56 gears, rear detroit locker...
With the ford superduty axles remember they are a 8x170mm bolt pattern vs the older more common 8x6.5 pattern, ford went metric I think in 1997?
Superduty axles:
Pros
- cheap, easy to acquire
- some front D60s are 35 spline out to the hub
- the D60 uses larger diameter axle tubes than standard D60
- D60 knuckles are bigger with thicker castings
- front D60 is high pinion
- rear will already have disc breaks, no need to convert it
Cons
- metric bolt pattern
- some have the front vacuum disconnect junk
- ball joint vs. kingpin axle strength
- D60 unit bearing cost and reliability in mud
- Luke
1968 M715 the Monolith