You might try the Ford SVT web site. If the HD F-150 is one of their creations. That's where I was able to track down the production # for my Lightning. They sent a full color certificate with Production #, factory location and build date. Nice.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.