I have a wind deflector in the garage, it came with the trad. I have the Librands rollbar fitted so the windbreaker fittings were removed. I have not tried hard to refit it as I need to fiddle with the mounting system. A possible project. It did reduce draughts a bit with sidescreens on.
I don't know if it would fit aero cars but will dig out the details of the fitting by a previoys owner. From what I remember it cost >£200 to fit at a dealers.


Plus Four MY23 Furka Rouge