Ok, so you're ON the housing, correct? That could be inaccurate as far as the frame rails. A good point would be the front of the box where the front spring hanger studs go through. See what I'm gettin at? That way, you're eliminating the housing, which bolts in and may or may not be square with the "CAR". You want to check the car and how the housing bolts in separately.....if that makes sense. That way, you can "see" where the discrepancy is. If there is any. So far, it sounds like there could be.
