Originally posted by Karnak 
Sikboy,
No, the wartime Yak-3 had the VK-105 engine.  The Yak-3 with the VK-107 engine was too late to see service in WWII. 
 Oops, my bad. 
At first, I was going to say "I was drunk" which was the case, however after looking at it, it turns out that I was mislead by a bad source. 
This: 
 Is a very bad source. Filled with typographical errors, and total mis-prints, to the point that you have no idea what is correct, and what is not. 
I bought it for Profiles, and hoped that it would be a good dedicated source, but I think it might have been translated poorly or something, because it's just bad. 
(but it does have lots of pretty pictures!) 
-Sik