Hi, what about this, it states it is for the Alpine, but not turbo, assume y6ou need the turbo version?....
Auspuff Dichtung Auspuffanlage Renault R5 Alpine neu
That certainly looks like it. Looking at these pics of a N/A engine though it looks like the manifold is the same on both N/A & turbo engines
JW Spares
Anyone know if that is the case? Can't find any illustration of N/A in Official Renault workshop manual. Maybe I can cross reference the part numbers quoted on your link Mark