Howdy MadOgre,
Right, I see where I made a mistake of omission. A 14bff out of a one ton will need the perches and one shock mount moved, but not if it's out of a 3/4 ton pickup. So it depends on the source of the housing (1 or 3/4 ton pickup or van, dually, or C&C).
I need to disagree that...