Actually two are visible side by side and probably non of them are M20 since they kept their fins and the fin from M20 is visible very close to Fw 190D-9 red 4 on others photos... and none of them are M23 since the camo is different... That's all i can say...
By the way looks to this ebay link before it closed. This one was wone for a little price probably because not advertised here on TOCH. The last photo show the 30mm gun bay as we never saw it before +++
http://cgi.ebay.de/WWII-3-TOP-PHOTO-...QQcmdZViewItem