I learned of this board over on the "bird board" in a semi-OT thread there.
http://forums.atlasf1.com/
The primary site and forum is obviously Formula-1 oriented but there is also a nostalgia/vintage forum and a few others. Vic Elford and Doug Nye have been posting recently on the nostalgia forum. IIRC Dan Gurney was also there recently.
Not likely to be much/any 914 content but vintage p-car racing ala 917's etc are covered.
DO NOT EVEN CLICK THE LINK IF YOU VALUE YOUR FREE TIME