The amount of stuff on the web about Mustangs will blow you away. Just do a Google search for "P-51 Mustang" and see what happens. Here are a couple of the links I liked.
Bud Anderson is a genuine triple ace American hero.and a gentleman. And if you enjoy reading about real Mustang action, his book To Fly and Fight should be #1 on your list.Bud Anderson Photos
P-51 sights and sounds.pretty good fly-by. You Tube Link
This is one of the best Mustang low passes I've seen. Great job with the sound. YouTube Link
Early in the book, Roseanna belly lands a P-39 in Canada. There are only one or two of them flying now, but here is what one looks like. YouTube Link
Here is a clip of the classic German fighter that Waldo and Roseanna go up against. There were more of these Bf-109s made during WWII than almost any other fighter. There are only one or two left in airworthy condition in the world. YouTube Link