MSCC shop has some large ones in gold, the MSCC can be cut off leaving you with the old Morgan wings.
Failing that any sign maker could make you some if you provide the logo. Seen some on FleaBay too.
MMC will not allow reproduction of the new wings badge but I believe you're ok with the old ones.

1969 4/4
1995 plus 8
1996 Plus 4 4seater
2002 Aero S1
2013 M3W
2014 Plus 8