Juan would have to show himself to be OTHER than John Kennedy (the son). His book, "Kid by the Side of the Road", a very compelling part of the movie, The Called, where he goes to Dallas to the site of where his father was shot, walks by the drainage hole from whence one of the bullets was shot, shows a "ghost" of his teenage self in 4 different scenes of that Dallas segment.

I may be interpreting it incorrectly, but the "ghost" represented John who, as an older teenager, finally came to grips with just what had happened to his father.

When David Nino Rodriguez interviews him, he always calls him "Juanito" (little John).

Juan said he was friends with Bill Cooper. Why would Cooper wait until October of 1999 (a full four months after the plane crash) to talk about JFJ Jr. "murder" and the media coverup?

I believe it's John until proven otherwise.

I do agree with you that he's never claimed to be JFK Jr.