I'm sorry you can't get cover, I use the company mentioned and I have had nothing but First Class service from them over the years, so it may just be they do not understand the vehicle type and you need to get to actually speak to someone higher up who can help you. Currently I insure my '43 Ford GPW, Chevrolet G7107, Capri 2.8, Skoda Estelle :-D, London Taxi and a Lambretta LI 150 with them and they always go out of their way to help.