Is my W124 1994 E420 chassis hight normal, lowered, or sagging?

[Andras]

I am the fourth owner and the car is about 14 years old. I wonder if the chassis height is normal, or lowered, or simply sagging under the weight of the engine. I measured the distance between the ground and the rubber jack pad:
Front: 6.25"
Rear: 6.5"
Are these numbers and the difference between the two normal?

I also took some side-view pictures of my car.

Picture 1: https://app.onlinephotofiler.com/images/A_4/2/8/8/8824/Picture_002small_16e7f.JPG
Picture 2: https://app.onlinephotofiler.com/images/A_4/2/8/8/8824/Picture_001small_76783.JPG

Each shock and strut has a large "2" printed on it. I don't know what that signifies.

My front dives too low on wavy road surface, but not on potholes. When it dives too low, the tire touches the fender wheel opening. I am pretty certain I need front struts, but may also need front springs. Without knowing the correct chassis height, it might be impossible to choose between comfort or sport struts, if the springs are not to be replaced. Should the springs be replaced?

Please help!