My car is not a a SL but a 111 3.5L coupe with the manual trans. It is also quite rare-I read there were 112 3.5L coupes built with manual transmissions. Having seen both auto and manual V8 cars it would be quite a project to convert to man trans. One would probably need a doner stick shift car to get all the pieces required. The V8 and stick shift are a great match. The only issue I have noticed is the D-jectronic cuts off fuel when coasting under closed throttle until RPM drops to 1000 then abruptly cuts the fuel injection back in. Fine for an auto car but jerky if driving slow in stop and go traffic.

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT