Laguna 1.5dCi S/Tourer 2008 - Radio, Carmin unit faulty no B/Tooth or S/Nav - GDFLaguna

My screen on the factory fitted Sat Nav Carmin unit started to take longer to boot up and display. Then it flickered and died. I and a Sat Nav expert near me suggested change the screen, which I managed to obtain one from RSC. It still didn't display. Well of course the unit is only giving basic radio, no bluetooth connection and of course no Sat Nav, no steering controls back to the unit either.

So it must mean a repalcement Head Unit. But where do I find a working unit in good order? RSC do not have one in stock atm.

I want to just replace like for like.

If I can't then can I buy a mounting plate facia panel and insert a compatible new unit in that? It is specially designed for Laguna dash board only..

Looking forward to your clever ideas or just a place that may have a 2008 working unit in stock...

GDFLaguna :-((