Thanks for all the input.
The intended use of the car will be for trips of up to 4 weeks in mainland Europe. One of the attractions of the Boxster the ability to stow luggage securely.
The Morgan dealer network is fairly thinly spread, and the factory have a real problem in dealing with shipping spares, if they can locate them. If there is a hiccup, you get stuck.
One one of the trips to Nordkapp we met up with a fellow in a Mazda MX5 who was travelling around the Baltic states as a charity event. He was pretty positive about his car dealing with a fairly demanding journey.