Saw this today on a blog, and dig some digging into it. Guy built one for himself, and has started a company to convert other peoples' 1993-2003 Sportsters into these nifty dual sport bikes.
His website: http://carduccidualsport.com
His own build thread: http://advrider.com/forums/showthread.php?t=657449
It looks pretty insane, but it's really surprising to see how little was required to go from Sportster to dual sport.