Are you looking for my car? :-)
Regarding the in-dash unit I can suggest you the Porsche classic I fitted this WE.
http://www.talkmorgan.com/ubbthreads.php/topics/104284/2
For the front speakers I fear that mine are broken/ruined because of water.
As soon as I succeed to dismantle the door cards, I will look for some "marine" speakers, hoping that they will have better resistance to water.

2010 Violet Aero Supersports | 2012 Green Vantage S Roadster