Manfred,
Options on the gear lever are limited, unless there are after market BMW units available. If you find one I think a lot of Morgan dealers would be interested!
I don't understand why the lever used on the Plus 8 isn't used, they cover exactly the same functions...
Steering wheel? The paddles are part of the column, not the wheel, so it may well be that there are options.
I'd contact Morgan Park in Hamburg.