I had these springs in my white 1987 300D, which was totaled about 4 years ago. They lowered the car more than I wanted, so I put in the tallest Mercedes Sportline springs that I could get, to increase the ride height. You've been warned... these Neuspeed springs will lower your car a LOT, like about 1.75" front and back. I would recommend these for an M103 sedan (260E, 300E) or maybe a coupe, but they're a bit extreme for the diesel (300D), IMO. These springs WILL NOT work in any 124 station wagon, any V8 model (400E/500E), or any car with self-leveling (SLS) rear suspension (this is a pretty rare option on most 124 sedans). If you have any questions, please email me.
On my 1987 300D, with a full tank of fuel, the distance from the center of the wheel to the bottom of the fender lip was 13.25" after a few weeks of driving. Stock was about 15". A photo of my white 300D with these springs is below.
A set of new Sportline springs is about $350 (list), new Eibach or H&R springs are about $250/set, plus S&H. These are in mint condition (see photo below).
Asking $175... FREE insured shipping in the USA via FedEx Ground.
These are the springs:
Here is a photo of my car, when these springs were installed: