Great article, thanks Kev
There are two points related to the article I would like us to consider.
While it is true some series 3 Supermirafioris had velour trim, I would disagree that the material was 'upgraded'. Many series 3 cars had poor quality trim that shredded very easily and I believe (although I have no first hand evidence) that the better quality velour trim may have become an option.
Secondly with regard to the mechanical changes, I also believe that the suspension geometry was also changed for the series 3, perhaps related to the upgrade to power steering. It certainly appears to me that the Supermirafiori 2000 had a wider rear axle than the 1600CL model. This is an upgrade I still have to do on my 'hybrid' vehicle!
An excellent article though and thanks for completing the story!