I only have individual DVLA 'lookup' rights which would mean 711 hand queries to prove or disprove that theory for all UK MG ZT 260s.
OK, I have done it twice to see how many V8's were still actually registered, taxed and MOT'd, SORN'd or officially exported or scrapped.
A long boring job, which I don't plan to do again soon!
As far as I can see from the tiny samples I have taken now of about 40 cars, I found only 3 MG ZT model descriptions of our cars, as I show above, ZT V8 260, ZT 260 V8 and just ZT, each with their SE and Tourer variants, and a "large number" of the first two, roughly but only very roughly corresponding with Mk1/Mk2. Further fishing could discover more of course, but this is more 'rod and line' than 'trawling'!