I don't know if this is of any help to you guys, but I found this site about the Coupes while doing some dreaming:
http://www.thecarsource.com/shelby/c...tonaspecs.html
and they quote a number for front track at 51.5 inches, rear track at 52.5 inches. Since all of the coupes were built on the roadster chassis, I would assume they're the same for both cars. Any help?