Changing the camber curve usually involves relocating something. 50 years ago taller spindles to raise the upper ball joint were not readily available. Maybe spindles from a full size car or truck could work.
The easy way on early Mustangs was to drill the UCA pivot bolt holes 1" lower. Inexpensive and functional to change the camber curve to gain negative camber to offset body roll. The Mustang 2 front suspension is not so easy. Those with cams to adjust camber would require cutting the mount off the frame and welding it back on lower.
Today there are a few options available for camber and bump steer correction.
Just money.
