also not all bump stops are the same...

Some (the square block ones normally on a landy) are very short and not very forgiving you're not supposed to drive the axle into these hard. Others are very long and pliable beginning to act on the axle after a very limited amount of travel. (usually just enough for the suspension to soak up normalish road variations)

While its unlikely if your stops have been replaced with a different type than the OEM spec then you will have a different clearance.