The Silver Dawn... my god what an awesome car! I only have an old 1981 Spirit and can only dream of your S.D.
Rolls-Royce really revamped nicely that model from 1996. I have started an upgrade, but as you must guess, it is a super expensive task.
I think the Silver Dawn, to my taste is the most beautiful model they have ever made with the Corniche (Seraph based)
Take care
Hervé