On my search for a wheel and adapter I had mixed opinions.
A german shop told that Simca 1000-1100 Chrysler 1307-8 Tagora and Samba/Horizon had the same fit.
At a french shop they offered adapters and sport steering wheels for € 49.- for the above cars.
I contacted them if it fitted the Murena, and they told me defenitly not.
The only one that makes adapters for the Murena is Nardi.
So I bought a Nardi adapter (Not cheap).
That fits most common sizes of sport steering wheels.
As far as my memory serves me, it was number 469.
I am still searching for a Talbot steering centre hub.