In any event, it does not make sense to buy a new car with an engine that went out of production prior to purchase. If I want more power in a new Morgan, the Roadster 3.7 is the wiser route from any point of view.
Whether or not the engine is in production is not a critera I would worry about when buying a new Mog or any other car, for instance the 911 is about to get a new engine but that wouldn't put me off the current model, and even when the engine is still current the specs change, ie euroVI emissions will soon be upon us