If you have a dateless plate, I don't think you'd get stopped as Morgans are impossible to date in themselves.
I've run illegal plates for years on one sports car as the space for the rear plate wouldn't allow a full size number and there's no place at all on the front - other than for a tiny plate. Haven't been stopped in six years of driving it.
I don't make a habit of flouting the law, but a few centimetres in difference is hardly Kray twins level.
