cmags -
Bud flew at least two different B models and 2 D/K models.
Have you ever been to his website?
Bud Anderson's P-51 Mustang "Old Crow" Web Page
Also, I suggest you check out his book, "To Fly and Fight." It's a worthy read - you'll probably read it twice.
Right now, I'm doing an "Old Crow" that's the second P-51B bearing the name. He requested that I render the version prior to the D-Day invasion.
Your cardmodel is quite good - you already know that - and I'm sure he'll get a kick out of it.