Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Please see this thread for updates. Update Thread
SOH ADMINISTRATIONI wanted to enter the Avia 57 in that race, but I wasn't sure I would have the time to dedicate to it right now :/Another suggestion for you - there's currently an ongoing race from London to Melbourne going on here, in this forum:
http://www.sim-outhouse.com/sohforums/forumdisplay.php?6-Around-The-World-Race-Multiplayer-Events
One version of the race, and the one with the greater amount of contestants (myself included), is the version taking place using planes produced prior to 1938. A quick perusal of the entries, along with a read of the official rules (there's a list of allowable planes in the appendix), will turn up many, many, very fine examples of golden age planes of all sorts. I myself have found several gems that I was previously unaware of.