If your going to go 2.0 Simon, it's only 200cc up on your present engine. You might be better off going the whole hog and aiming for a 2.5...
I think he wants a roadster but is unsure whether he would drive Stanley and a Roadster, mind you if one was yellow
The 2.5 that Williams can do will give you the power (and the glory) without the weight of a 6.
But does it have the torque?
After driving the 4/4, +4 and Roadster I felt the Roadster's torque matched the character of a Morgan well. The smaller engines seemed to need to be revved a lot, which they did well, but that didn't give the lazy torque that a 6 or an old, long stroke Triumph engine delivers.