The only exception I'm aware of is 5S003: http://www.1965gt350mustang.com/images/017big.jpg Don't know if 5R001 or 5R002 ever had their's removed.
Howdy folks! This question pops up every now and again,and with every year we learn more.It is very rare to see any 65-67 Shelby with a door data tag.They were removed (or suppose to have been) by Shelby American,if Ford had installed them.Many people report they have found data tags under the carpet of '67s.The best current source for information on Ford tags is Kevin Marti's new book.It should explain any questions you may have on data plates. Hope this helps