Alternative Sun Visors

[William2]

I would like to fit a pair of sun visors to my S4 DHC but they rarely come up for sale and not surprisingly fetch good money.
Has anyone found sun visors from another small classic car that can be modified successfully to fit?

[Nickm]

I've wondered about modifying some others and you can get new covers. Has anyone got pictures of a "naked" sun visor and the measurements?