Landrum makes special springs, with the front of the spring being extra-stiff (like a hidden traction bar).

If you have multi-leaf springs, clamp the forward leaves. You can also install a "helper" spring to the front.

I have the SouthSide Machine type "lift bars" on my car. The front of the bars clamp solidly to the spring which causes them to angle upward (and not be very noticable), instead of hanging down like the old style "traction bars". These work REALLY well, as the body will actually raise several inches in the rear, when I launch.

Lee