OE Spec or Performance/Custom: Performance/Custom Manufacturer Part Number: K243 Features: Down Draft, Progressive Linkage This kit did fit a 1970 Mercedes 280S; required some modification to throttle linkage, fuel lines, electric choke wiring, and PCV system, but did run well after with minimal tuning Weber Workshops Mercedes Benz 220 230 250 280 Weber Carb Conversion Kit Weber Spirit E 320 Choke Type: Electric Choke Other Part Number: Mercedes Weber Interchange Part Number: Mercedes Carb, Italian designed - made in Spain Webers