Engine, suspension and chassis shared with the 300SL

The 3.0L M186/M189 six is repeatedly noted as the technical sibling of the 300SL Gullwing/Roadster engine, sharing the cylinder head, suspension and chassis architecture; the injected 300d and 300Sc used Bosch mechanical fuel injection like the SL. Enthusiasts treat this shared DNA as the core of the car's under-appreciated value.