Mine was 6 years old when my pictures were taken and I was in the Army. A week after that picture, I drove it from Orange Co, CA to Ft Hood, TX at 80 mph (Southern route), then a month later, I went back to CA at the same speed. No issues, at all and never noticed any wind sensitivity.
Mine was a 352, Auto, no A/C (would have been nice in June/July) and definitely, no power issues
Frank