I'm afraid I can't see a lot of sense in having more power than you can actually use. What I want out of a car is something that has a reasonably comfortable ride but at the same time can get around a corner quickly without uncomfortable body roll and/or loosing grip. My days of drifting and getting through a set of tyres in 8,000 km are behind me.
I want a car that is going to be able to easily maintain legal cruising speeds (or maybe just a touch more
) even on the steepest highway hills when fully loaded. I frankly don't care what the top speed may be even though I might occasionally give the car a run on a deserted road but with these days of speed traps and restrictive laws I don't want to risk huge fines and losing my licence.
I also like the idea of some driver "aids". I do like ABS, and traction control would be nice but not essential with the sort of power I think of as adequate.
With a naturally aspirated car I think a 2.5 litre engine would suit me better than the 2.0 litre engine I have, With a modern turbo charged engine, and considering the weight of a Morgan and the torque characteristics of a turbo engine , I think I would be content with a 2.0 litre engine. I would probably find an engine that developes 200hp more that adequate.
I would expect reasonably quick acceleration from a standstill and enough for safe overtaking plus good comfortable cruising speeds.