The two extra lights in question are most likely from those POS Eleanor kits. (Yes, Eleanors make me want to PUKE!)The large "spot lights" are in two locations because the gov't didn't like the close together early 67 version http://www.shelby-mustangs.com/1967-...tang-002-4.jpg
LATER MODEL YEAR 67s WERE FARTHER APART ON 350s AND 500s. http://xenocide-rpg.com/pics/cars/shelby_gt500_1967.jpg
SORRY I WASN'T SPECIFIC ENOUGH EARLIER.
The 67s (350s AND 500s) have a one piece hood and the 68s (350s and 500s) have a normal length hood with a valance for the extra length. (wouldn't want to miss lead anyone else)
The major differences in the two are the drivetrains, and the quickest way to tell the difference is to read the side stripes!!