Big engine, tall as well. I think it would be a great engine for the 60 but would need some well thought out planning to deal w/the torque, weight and size.
5.9's pull a good buck even as a core. Depending on where you live a 5.9 w/ that kind of mileage could still go for $2500 or so if it's been maintained and has no issues. I'm looking for a good one for a 75 f250 Hi-boy right now.
I have no idea really. But a diesel engine in junkyard(without anything extra) can run 5K canadian for a cummins. That is what I was quoted a while back. But if I did want to do the swap I would want the whole running gear. Might as well use the axles, t case, trans....all. And get the driveshafts cut shorter or whatever.