I did a complete rear replacement bushing on my w201. I used these bushings.

https://www.garagistic.com/products/mercedes-190e-polyurethane-rear-spring-perch-bushings

Attached Thumbnails

   

__________________
63 190d (sold)
69 220D (sold)
69 280SL (sold)
76 BMW 2002 (sold)
86 190E-16v (Demised at Laguna Seca Turn 9)
87 300SDL (sold)
87 300SDL 135k
87 300TD 280k (sold)
95 E320W 211k
95 E320w 111k
05 C320 4matic
06 E320 CDI 90k (Totaled by a texting 19 year old girl in a nissan)
2013 GLK 250 Bluetek 4MATIC

How does the car feel now? I looked at their site (thanks for providing the link) and it indicates the "80" poly version is for regular street driving. I wonder if it feels "stiffer" but not overly so, and any hardness translated with bumps/potholes, etc? I like the idea of it being longer-lasting.