Can't find it, but I did see a $70,000 EB with nothing but some Aluminess accessories...
SMB4x4 has the Atlas which gives you low range in a single axle if you want.
Quigley has F-350 t-case
SMB4x4 has a Pro-Rock Dana 60, a custom offroad axle, in front.
Quigely has F-350 Dana 60
SMB4x4 is leaf springs all around
Quigley is coils in front.
SMB4x4 has a better turning radius by a little more than a van width when doing a full circle (95 Quigley vs. 2005 SMB)
You can do "the trick" with an SMB. The only person I know to have done it had to replace the transmission. Coincidence?
There are other options to get a F-series truck transplant, but nobody else (AFIK) offers the AtlasII.
In conclusion: either.