WInd whistle changing to high piercing shrill noise

Just got this 1967 convertible and have this very loud shrill noise on the left side. Definitely a wind noise as it gets extremely loud with increasing speed. Anybody else experienced anything like this? Not wheel bearing, alternator, belts etc as have checked all of these items. any suggestions?

I bought my 67 GT convertible July 4 1998.

It has the same whistle noise. I gave up trying to find and fix it a long time ago.

There was also a TV show on Spike TV a few years ago with a 67 Dart GT convertible driving down the road.

It also had the same whistle noise.


Herb