Why are there some Mark LT's with rounded fog lights and others with squared ones??? I usually only see Mark LT's with square foglights, but I saw one today with rounded fog lights. Is there any other difference besides the foglights?

 

The round foglights are the 07's.

Then the even newer one's have different headlights, different wood on the interior, nicer seats with chrome lincoln emblems on them and the center console, chrome trim on the tail lights, wood on the steering wheel instead of two-tone leather, and most important, they changed the grille.

I guess they had to do something to set it apart from the F-150.