Doug, I'd recommend using www.car-part.com to find your headlights.  Car-Part clearly shows the 3 headlight types that you refer to.  I also repair cars (rebuildables) and I use this site for my used parts.  It's a database of salvage yards all over the country.  Good luck, the site listed: 
  
  
(halogen), w/o adaptive aiming; R.  
(halogen), w/o adaptive aiming; L.  
(halogen), w/adaptive aiming, w/o Lincoln insignia; R.  
(halogen), w/adaptive aiming, w/Lincoln insignia (Limited pkg), R.  
(halogen), w/adaptive aiming, w/o Lincoln insignia; L.  
(halogen), w/adaptive aiming, w/Lincoln insignia (Limited pkg), L.