Side Window Deflector - wind noise Options

[Grosbard]

I am thinking of ways to reduce wind noise while driving on the highway. It's not too bad right now, but I would like to improve it so that I can have a conversation on a long drive having to raise my voice quite so much.

As I see it, reducing wind noise sort of has 2 components:
1. With the windows closed - because the windows don't seal perfectly, there is still significant noise coming into the car
2. With the windows open or partially open - i guess this would be buffeting?

Of course sealing the windows as well as possible will help with #1, but not #2. So I was thinking, is there a solution that helps both? Basically something that deflects the wind so it goes around the car instead of trying to get into the cabin.

Has anybody tried something like this?:
https://www.weathertech.com/side-window-deflectors/

If so, did it help? Can you recommend a brand? I'm well aware it will probably not look great, but I can live with that.

[Grosbard]

@infraredcalvin Thanks for the info!

Yeah, that's basically the thought process I had. I assumed it would be impossible to find something specific to the 914 whether it be from the period or not, but I was wondering if anyone knows of a modern generic wind deflector that would be easy to modify, or even better that is close enough to work without modifications. Again, appearance isn't that important to me.

I figured a convertible like the Miata or Boxster would be a good place to look, but I couldn't find anything for those cars.