I think an Aero 6 makes excellent sense, or even using the trad looks on the Aero chassis as per the new(ish) Plus 8. Call it a Plus 6!

But I expect that would need to cost too much. I bet the Aero chassis costs too much to build...

Or even two tandem V2's from the 3W to make a V4. That should rattle a few teeth! Mind you a 4 litre V4 might not be quite the right direction...

Or perhaps an electric vehicle might be more appropriate - can't see hybrid fitting in any Morgan.