Low serial number car, http://cgi.ebay.com/ebaymotors/1968Cougar-GT-428-Shelby-Cat-/230745383627?pt=US_Cars_Trucks&hash=item35b97f22cb
Not bad. The seller isn’t saying it’s a Shelby but what the owner thinks Shelby would have done. A few more tweeks and it would just about be right IMHO.