Yes. Yes you are...
What Austin said. But with our lower geometry, god knows what sort of binding you might get if you try and throw any real amount of rear caster at it. I'd use it to even the two sides up and leave it.
The real gotcha is that you can't rotate the wheel enough for any of the alignment machines I know of to measeure it. Plumb bob, and a level, I guess. Or camber guage on the front/rear of the strut if there is room below the spring.