Per my understanding, Sachs is a division of Bilstein and are the same identical shock, just at a cheaper price.... no matter what though, I would use one of those 2 brands. Definitely stay away from KYB, Gabriel, Monroe, or anyone else!!!!

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1967 Mercedes 250S w/ 350 Chevy V8, stock transmission and rear end.
1968 Mercedes 250S w/ 229 Chevy V6, 350 Turbo Transmission with shift kit, and 1981 Corvette rear end.