One of the more important components of a vehicle today is the wind deflector. It's positioned above the door windows and helps keep elements from coming in. If you're looking for a new set for a vintage car, take these precautions.  Choose a Material   You can find vintage wind deflectors in a couple of different materials. As long as you choose a material that suits your car needs best, then this investment is going to bring you more happiness and thus work out for the foreseeable future.