CSX 3243 was one,
the other, CSX 3255
Above images from http://talk.cobraregistry.com/showthread.php?477-Most-Significant-Cobra and http://www.pistonheads.com/gassing/topic.asp?t=782242
The Gumball Rally movie had a couple Shelby Cobras that made an impression on a lot of kids when the movie was first released
CSX 3243 was one,
the other, CSX 3255
Above images from http://talk.cobraregistry.com/showthread.php?477-Most-Significant-Cobra and http://www.pistonheads.com/gassing/topic.asp?t=782242