Look at this post I made, I can't seem to reattach the images I robbed from somebody else years ago.

http://www.peachparts.com/shopforum/3981450-post16.html

Stock on my 82 W123 Sedans is 1233243604 (371mm length or 14.6", 19.1mm travel per 1000N)
I installed 1163240804 (Technically the same length, just much stiffer so it sits A LOT higher, 373mm length 14.68", 16.6 mm travel per 1000N)

__________________
1982 300D (w123, "Grey Car")
1982 300D (w123, "Blue Car")
2001 Ford F150 "Clifford" (The Big Red Truck)
1997 Dodge Ram 2500 12V Cummins
1996 Dodge Ram 2500 12V Cummins
Previous Vehicles:
1995 E300D, 1980 300SD, 1992 Buick Century, 2005 Saturn Ion