Well, unfortunately I couldn't really find any 475th Js...
but in trying to research, I did find this, which I intend on doing

Yes, it's a real bird, but tough to find information on. I've seen a couple of B&W pics of it so that's definitely real.
As far as a 475th, I would do one if I could find more examples. I've been really REALLY tied up with school (only 3 more months), so my stuff always takes forever (like that P-51 I started last year. hahaha).