[350zwelgje]

Proposal: Have a look in Belgium, but then you need to import. In theory should not be an issue with the 'modern' EU documentation.
In Belgium: not many ZTs available these days, but come up from time to time, but in your not preferred colours!
75s should not be an issue as they were popular when new a quite a few were sold here, especially diesel, just to find the right one which is standard for a secondhand buy.

The 75/ZT on the continent is not cheap, as they were and are considered up market and quality cars. Often people comment to me that I drive a nice Jaguar..... If they are lower priced, they were not maintained and the clutch , MOT not passed or something needs to be done. The only disadvantage is to find a place that wants to work on it and knows there stuff. Do everything myself so that is not an issue for me

France: these models always have been expensive so not many around and still expensive to buy secondhand. French enthusiasts therefore in the past often had a look in Belgium for that reason!
Think there are two places in France that are 75/ZT specialists and know there stuff (don't have their details), perhaps worth to give them a shout that you are looking for a decent one and perhaps they can be of help.

Rob