In most applications, after installation the spindle centerline will be 1/2" above the bottom of the frame
rail at axle centerline. So, if your current spindle centerline is 2 1/2" below the frame rail with the total
weight in the vehicle (engine, etc.), then the vehicle will be lowered 3" after installation (2 1/2" + 1/2").
*Note: "B" must be vertical 90 degrees with level place or rake at which car sits.