Posted for "Mark & Lisa" <marknlisa@hometel.com>:

 Check with Hooker Harness (http://www.hookerharness.com/).  I don't know
 about the IV, but they make a harness specifically for the Legacy.  Their
 prices are very reasonable.
 
 Mark & Lisa Sletten
 Legacy FG N828LM
 http://www.legacyfgbuilder.com
 

"""
  I went here: http://www.basinc-aeromod.com/ and found some pretty
 convincing evidence that the conventional 3-point diagonal seat-belt is not
 what you want if you're in a serious but survivable accident (see pictures
 and descriptions - pretty amazing what can be survivable).
"""