You can place the steering box roughly flat, but it's best to pay attention to the angle of the pitman arm and also where the splined input shaft of the box is aimed. On any old Jeep you will have ...

No U-Turns Without U-Joints: 89,000-Plus Jeep Grand Cherokee, Grand Cherokee L SUVs Recalled for Steering Columns By Patrick Masterson May 23, 2023 ...

As you can see, we now have all green results because the front U-joint angle (Angle 1) and rear U-joint angle (Angle 2) are now within spec and the total operating angle is 3.2 – 2.2 = 1.0 degrees.