A couple of holes in the story, One is that they claim the kid didn't watch WW2 documentaries or have any exposure to this sort of thing but fail to mention that they took him to WW2 air museum where they have a Corsair on display.
Also the pilot he is supposedly reincarnated as, apparently went down in an FM2 not an F4U.
http://skeptico.blogs.com/skeptico/2005/07/reincarnation_a.htmlI never discount the possibility of the "unknown", but this story may or may not be what it seems..
Don't ever doubt that there are a lot of attention hungry people who might latch onto one strange coincidental thing and almost subconsciously invent the rest of the story.
Edit: I'd also find the story more compelling if they had convinced a therapist who
didn't believe in reincarnation in the first place.