According to Morganville that's a 1999 +8, but I would have to look up when the long doors were introduced. My gut reaction is that it's a long door.
Graham will probably know the date of change.........
Update - from the Morgan MC website:
In 1997 the production models were extensively overhauled, with the standardisation of the new Aluminium superform wings (all except the 4/4), longer doors, redesigned facia to allow for airbags the introduction of a 4.6 litre V8 version and generally improved materials throughout.
