I believe this myself. When I had my ‘73 Cuda road worthy many moons ago, I also had this issue. After I installed S/S springs, the floating feel was less. So I started to mess around with the front ride height. Then read end height as well as front end alignment. These three factors I found were the key.
At the time I also installed a GO wing on the back. Since it was adjustable. I messed around with that “variable angle adjustment” as well.
What eventually found was (obvious I guess) that the faster I sent the more the read would be pushed down on and level the car out. Sometimes to much. So down went the nose. I eventually tinkered with it to hit the speed of 150+ mph on my speedometer.
