Exactly on getting to zero. Possible? Sure, if you're willing to sacrifice every other setting to get it. Likely? Nope. Especially not on a street car where the other alignment settings are also important. It's all a trade off.
The only way the 1" raise would be true is if you're at WOT and accelerating. If you're maintaining a constant speed the car will be at ride height or close to it with aerodynamics. Mild acceleration won't raise the car that much. And torsion bar diameters would play a big part of that too, with /6 bars you might get that much rise. With 1.12" bars like mine, nope. That amount of weight transfer would not be 1" of suspension rise.
