I've been killed alot by the aces of 38's while flying my F4U-4 over the time, but that's generally because I've been wasting my E by pulling too hard on the stick not knowing my plane well enough..
As I learned to manage my E better and ease down the moves I find the 38's alot easier to kill. And once u get on top of them they really have no place to go..
And I love to put a lead fire on them as they turn, they make such huge targets in the sky that makes them almost impossible to miss..

And even if they can take a beating with 2 engines and all, when u see the hits all over that large wingspan u just hold the fire for a fraction longer and u know their tail is gone.