It's not clear to me how the engine layout maximizes legroom, unless the seats are so far apart that nit allows legs to be beside the engine.
Are they?
The engine is a transvere mounted ingine. So it is wide while taking up very little depth. If you look up any of the videos of the engine that is the normal mounting configuration, which easily accomodated Morgan for finding a small footprint engine. Whereas I don't like it as much aesthetically as having a v-twin up front, I think it is a natural for this application.
