Thanks for the clarification on the competition suspension - I used the term "perhaps" because that is an area I have not studied, and figured that someone that reads this post later on might wonder about it.
I suppose I should also mention that in other posts and sites there has been some discussion, with pictures, of some exported vehicles that might not have received the export brace. I would think, though, that the export brace should be "expected" to be found on exported and Shelby versions of the Mustang, and expected to not be found on others. Exceptions, even if documented, probably should be respectfully questioned.