Supercharged 3.7 V6 from the trad roadster development mule?
It's not smooth enough to be a S6 and not lumpy enough to be a V8 even with cross over pipes.
And I don't want to say it's a S4 coz that would just be embarrassing.
I can only think Morgan managed to get the supercharging of the V6 working in the Roadster they had with that set-up and have kept it for this.
