Welcome ! ( I was also born in Bucharest but left there in 1970, when I was just over 14 years old ). Anyway, there’s excellent information on this forum which will enable you to make a very informed decision about the car you ultimately choose. No longer available parts are a concern, but with enough search here you’ll identify if they’re critical or not, as well as what may be available as replacements from aftermarket sources or even from different makes and models ..
I agree with Bill’s ( ibpesq ) recommendation in the above post.
Just don’t forget what may be the most critical maintenance item on the car : the timing belt ! Plenty of threads and posts here with cautionary advice on that .
Good luck with the search , these cars are phenomenal .