I managed to bend the ear of the Chiltern area contact (Ron) and now have at least a bit more info for the viewing tomorrow. Will let you know (and post a picture) if I come home with it.
Hi Simon, welcome to the forum. Unfortunately for you most of the frequent forum users are Fastback owners and as such have little or no knowledge of the series cars. Where are you based, it is quite likely you live close to a series car owner who would be happy to speak to you or even view the car with you.
The car in question looks nice and at that price you would expect it to be very good but I'm sure there are certain areas to pay special attention to.