Rectangular Brooklands screens are commonly available.

I cant remember where I got mine, it was at least 5 years ago I fitted them , but just googling I found these which look identical :
https://www.scparts.co.uk/sc_en/bro...fyEx-gVazXQFl4DSr2l-bY7U2xBoCQvIQAvD_BwE
Its a hairy experience driving at speed with them unclipped, not recommended but I had to try it once, but with a nice rake angle they send most of the airflow over the top and I think look pretty cool.

The pull handle works an air horn - impractical in reality as a safety feature and horn but the grandkids love it so it has been on almost since day one.