Paul,
So pleased to see the most famous of the 2 Litre saloons starting a new life.
The pictures of the car at Rest and Be Thankful are very evocative, especially the one at the top hairpin and the one at the start with, I believe, Raymond Baxter in the Irvine flying jacket.
I suppose it would be most unlikely that the car did not receive the best available engine. It will be interesting to see what is revealed when you get it apart. In any event best wishes for an enjoyable journey and some good fun at the end of a lot of hard work. By the bye it doesn't look as though your lifestyle is going to make a long term restoration project quite straightforward
Barrie