345 exhaust manifolds

["Gann, Jeff " <jeff_gann@domain.elided>]

     I have been searching for an exhaust manifold for the passenger
side 
     of the 345 in my 67 Travelette, but have been asked the question
"Is 
     it a narrow or wide box?"
     
     Beats me.  What's the difference and how would I know?  I have
located 
     a couple of sources who will ship to me, but both have asked this 
     question.  Does anyone know of any salvage yards or parts houses in

     the Dallas/Ft. Worth area.  I'm pretty good if I can actually see
the 
     part ("yep, that looks like it").
     
     Any help would be appreciated
     
     Jeff