I had Wind Wings for the toll windows on my '78 and loved them. It made a huge difference in air movement inside. My '77 apparently had them at one time, as the drilled holes are in the window frames. I really want a set, but I just can't part with $249 for a set. It's probably $15 in parts. Has anyone tried to make their own version of a wind deflection device? I'm thinking about attempting it in the near future.