Window visors / vent shades. For 280Z

Does anyone have any thoughts on what window visor / Vent shade might fit on a 1975 280Z?

I have tried many search combinations in google , amazon, eBay .

Nothing comes up other than "sorry we have no specific recommendations for your application at this time".

I am lead to beleive that nobody has ever needed to drive their Z in the rain that was either not equipped with A/C or it wasn't working.

I'm thinking there must be a car someplace that has acceptably similar window frame shape to facilitate a modification to suit.

When it rains here in Grenada , it Really rains .

My A/C currently does not work and no amount of defrost vent fan can sort it out sufficiently that I can see out the windshield without wiping the inside of the windshield ten times a minute.

Tricky to do while shifting gears and whipping the car around corners.

I really hate showing up to work in a wet shirt.

Regards

Bloxman