ianc
In answer to your question regarding the Daimler SP250 engine in XRX; No it does not still have that motor.
I last saw XRX1 at Spa about 9 years ago and it was then running a TR engine, fitted, I believe, by Brett at Brands Hatch Morgans at the request of the present owner. But it did still had the widened engine bay side plates which I handmade in SA in 1974.