My Murena had an aftermarket wheel when I bought it: an Italvolanti Indianapolis Formel (365 mm).
Apart from being a tiny little bit too close to the top of the instrument binnacle, my main problem was that it was black!
This week I discovered the same wheel but in brown (brand new, still in the box) together with a matching (used) boss.
The boss has the code number 1603X
The boss is black. I did consider painting it, but don't think it is too noticeable.
Old and new
I was able to simply unbolt the old one and put the new onee on the existing boss (also 1603X).
Now it looks much better – and feels lovely and new!
I may connect up the horn buttons (haven't yet) but the wirring is all there
So pleased to have found this...
and the black one will go very nicely in my Beta Spider
stock
(when I get the right boss)
I should perhaps point out that here in Switzerland, to qualify for "Veteran" status (with the numerous advantages that offers) cars can only have periood accessories, so a modern wheel is disqualified.