This is a bit of a stab in the dark but you never know until you ask. I have a pair of Carello PF-JOD fog lights that I would like to mount on my 79 Type 2.
The original black covers are badly cracked along the bottom edge and need to be replaced. I managed to find a white one a few years back but need another, or two black ones. They covers are about 7 7/8" in diameter.
Here is a pic:

Any help would be appreciated. Thanks.