That is a good article, although I did spot one error in the application list. The GM duallies used a Dana 70, not the 60. Also, 1 ton Suburban?

But otherwise, a very good aticle. One application that they missed, and this one is very rare, was on Jeep CJ2/CJ3. There were some optioned not only with a Dana 60, but duals on the rear. Usually, these had some sort of rear mounted implement, like a drilling rig. The also saw use on the FC Jeeps.
BYW, a used semi float 60 runs around $100-150 around here, I'd say the price range they give is accurate, with the full floaters at the higher end.