I doubt the coil spring spacer you linked to will fit. The coils on an MB are much larger than many other cars. They are also spaced much closer together. Consequently, if you can even get them between the coils, they probably wont rest in the grooves and will migrate on you.

It isn't very expensive to repair what you have. Areas that are usually suspect: Subframe mounts, Trailing arm bushings, Differential mount and finally, the Coil spring pads come in 1-3 "nub" heights. For the jobs that require a spring compressor, one is available in the tool rental program here on the forum.

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Sam

84 300SD 350K+ miles ( Blue Belle )