I personally Know this truck, and it is not the one from Calgary. Also, the salisbury rear end is made by spicer/dana and is the same as the dana 60 not the 44. We just installed an ARB in a friends Dana 60, and the instructions also included the Salisbury!
This is a really nice truck that I have been trying to persuade the wife into letting me buy for some time now with little luck! Its hard to convince them that a guy needs two!