Correct. Given the fixed (non-adjustable) length of the control arms, any "lift" via torsion bar will cause the wheels to go positive. If the arms were equal length (they aren't), there would be a track width change, but no camber change. In our case, we get both a narrower track and positive camber.

It would be nice if someone could give us an idea of how much positive camber is introduced per inch of suspension lift. I figure that if you run -2 degrees of camber, then lift your truck, you will be close to 0 degrees after an inch or so of lift. Either way, tire wear aside, I'd rather have a little negative camber up front.