www.reimo.com/en/download-catalogues is the start point for the company, haven't looked for a while, but if memory serves. The tops are made in Germany and they do not export. Therefore travelling to Germany with a low loader or container, would prove very expensive, probably equalling the cost of the roof. Which then needs fitting, insulating and spraying to your colour.
Hope this is of some help, and keep us all informed, as it's something I would like.