With a car like this, much of the value and provenance is in keeping it standard, or at least any mods should be unseen e.g. an HPT actuator on the turbo for a bit more grunt which would only be visible to someone who knew exactly what they're looking for.
I am curious, if it's a UK car for the Danish Embassy and therfore RHD, how come the speedo is calibrated in kmh instead of mph? Do you know or is it one of the quirks of the car that you'll find out about eventually?