I think this part of the forum simply reflects the ownership profile - not so many with older cars. There's a lot of information about parts, servicing, restoration etc for older "traditional" (better word then "classic" IMO) Morgans on:
www.gomog.comwhere you will also find the emog mailing list.
If you're a member of the MSCC you will also find the mogtalk mailing list a great resource.
OTOH you may already know all this!
Nigel