Hello, I still have the original 1.7S with 75hp in my 1971 C record. That was always good for me. Although no racing car 😉 but ran prma and reliable, I drive the car all year round. Now I unfortunately have a camshaft damage after a longer motorway ride and need a new engine. So far – a 2.0S (from D or E record) with suction bridge and carburetor (I think Zenith) – a 2.4E (from Opel Frontera) with injection system and ECU , but not a wire harness. Since I have an H license plate I have to do something H compliant, so rather something with carburetor. What would you suggest what can I do? I have little experience with motors to/from, but am a good mechanic. Thanks for all the answers!!!