The Flight sim in question is Warbirds by iEN. But I have been known to spend time in MSFSX as well and on their (or other) boards. I have attended a number of the Warbirds conventions in the Pacific Northwest from around 97 through 2005 or so. I've met many people and been to several homes for BBQ/dinner and still meet up with some of them at museums and events where the WWII aircraft are flown.
I see you're from southern California. I've been to Planes of Fame a number of times and to the Long Beach Grand Prix a few times in the early 2000's. I've never been to Willow Springs though. That's where they train the Amateur racers for the Pro-Am event at the Long Beach Grand Prix.