Bill,
I'd like to get an update on your Birkin driving impressions after you've had it a while. Specifically how it compares to a Cobra replica. (I also have a replica - an FFR - and have considered selling my Roadster some day for a Lotus Seven-type car.)
It looks like you got a very nice car and I'm very curious how you'll like it as compared to a "Cobra".
Enjoy!