Well, the standard mounting location that our template describes is designed to get the bottom of the tierod that attaches to the pitman arm to within about 1/2" from the top of the spring pack.
We figure that a half inch is a good estimate that at so close to the front hanger, the spring is not able to compress 1/2" at that point. So that's where you would idealy want your links to line up as once your box is mounted.
Regards,
BigMike