Not sure if Steve's number of 40 may be a bit pessimistic.
I checked through members who have been actively posting on the Forum in the last year, for whom the car's VIN has been made public in a post or in the 'About Me'. I come up with 40 ZT-T owners (UK), making sure that I threw out any duplicates, such as the same car changing hands in the last year (... one of these days I'll get a life ).
Point is, that there must be more cars from owners who haven't posted on the Forum in the last year, or having owners who are not and never have been members at all, I would think ?
I'll check the S/C cars if I can, but that information is a bit sketchier, and what there is, probably rather unreliable.
David