I came across a website (for Ford Rangers) that contain information about converting Ford D44s.
http://www.therangerstation.com/tech_library/Dana44.htm
http://www.therangerstation.com/tech_library/narrowing_a_ford_dana44.htm
http://www.therangerstation.com/tech_library/Dana44.htm
http://www.therangerstation.com/tech_library/narrowing_a_ford_dana44.htm