What's the difference between 71 Dart and 72 Dart fuel line?

This is the correct fuel line, for a small block, with a carter. In the future, it would help if you described
a little more detail of what you are working on. Example: Small block, with a Carter ect.

In regards to the different years in tank to pump fuel lines, this is something I would be asking them about.

PS...The pic is of a 3/8" fuel line, to a Carter/Edelbrock.
That looks like exactly what I need. I am working on 71 Dart, motor is a 360 with an Edelbrock AFB.

What part number is it (or the 5/16 line part number they copied it from)? If I had to guess I'd say that's RPC6808 but the 3/8 version?