...When I was young, I was stupid, and made some tuning on it, but it's gone and this winter I will start with complete renovation and the result will be, of course, maximum orifinality...
Sorry, somebody can understand this sentense that everybody who make modification is stupid. I take it back, it was strong word, I meant something like reasonless

In 2004 Czech visitors at International Simca Meeting won 4 from 5 categories in the Elegance Contest. You know why? Because in our minds not even not original mirror could be on the car, engine block has to be dark green, not back, blue or red, etc. When there were comunists it was impossible to go to the shop and buy for example speedometer or shock absorbers. So people used modificated Skoda or Ziguli parts, and that is what we (Simca/Talbot enthusiasts) really hate.
Look how many (how few) of original Matras survived, it will be harder and harder to find an original Murena when everybody will modificate them, but at least every new modificated Murena only increases the value of the original Murena

But I want to open Your eyes and convince You not to modify Your rare cars, save them for next generation!
I work for Bridgestone EU and my company car is Skoda Octavia, men when I sit down into my Murena the seat is soft too much for a sport car, suspension (and there is Spax on my Matra) is softer than at Skoda, etc. but I rather drive my Matra because I love this car as it is, how can I explain it better...