Rubber fuel line to Bosch fuel pump

[bavaria911]

I have a 1971 Targa 911T and had the Bosch fuerlpump rebuilt and now started to install the part. The rubber line after the tunnel from the fuel tank is a little larger than the return line to the tank. I need to replace both of the 44 yr old lines. What are the sizes? I noticed the one from the tank is larger , based on the nipple size on the bosch fuel pump.
Can someone confirm the size of both?

Vr,
Scott

[Das Schnell Ei]

I have a later car (75-77) and the feed line is 11.5mm ID ...return is 9.5mm ID