Theres 3 ways to change camber, at the top, at the middle or at the bottom. Equal headache for less supported cars.
Top = cambertop / coilover conversion as std spring diameter hits inside of tower.
Middle = Bend stub axle or notch, reangle and reweld strut tube to axle stub.
Lower = LCA conversion with track increase (legalities) and swaybar / radius rod fitament.
All have pros and cons regarding suspension overall or legalities.