If you want a car HERE and NOW you should contact Ruud at Carjoy in Holland.(i was about to just as my car came up for sale)
Ruud is a Matra specialist and (last I heard) is happy to help with the papers needed if the car is to be exported.
I have bought an engine from him some years back, and In my experience he is honest and know everything there is to know about these cars. And the best thing is that he always has at least a handful of Murenas to choose from, making the long journey that much more worthwhile.
Of course you can ask Ruud. However, it is good to know that he left Carjoy in 2009. He concentrates on the EZ Electric Power Steering that he started Februar 2008 together with Roger Reijngoud.
See:
http://www.ezpowersteering.nl/index.php?p=4&lang=ukHe sold Carjoy and the new owner is Laszlo Racz. So Carjoy moved from Herwijnen (back) to Leerdam, where it once started. And Carjoy has indeed at least a handful of good Murenas to choose from. You can even buy a Murena with a turbo motor or with an Alfa V6 there.
http://www.carjoy.nl/showroom/cars.asp?id=2