Well I know for sure that Boge is an MB OEM supplier. Hmm...I guess my best bet would be the $23 Boge from FastLane. I doubt I could tell the difference between it and the Bilstein, except longevity maybe, and I can buy the Boge more than 3 times over for the price of the Biltein.

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'86 420SE Euro
904 Midnight Blue, Gray Velour
Dad bought it new, now I own it.

"A Mercedes-Benz is like a fine wine, it only gets better with age."