Whats air conditioning ? ! Roof off , side screens off ?
You have a roof????
Believe me when the temperature gets up to over 35°C in the shade, the sun is threatening to turn your brains into noodle soup, your perspiration starts to puddle around your groin, and you have 400km to drive to your next overnight stop, you can tell

that you are having fun and risk a very unpleasant day or you can do the sensible thing.
The sensible thing being to stop under a tree and put the sidescreens on and the hood up, wriggle back into the car, and turn the aircon on.
Nobody ever said that you had to be a masochist to own a Morgan.
Though, on reflection, it probably helps