I've upgraded my fuel rail set up to Radium Engineering along with AN lines. I've run into a speed bump with the fuel return line. I have upgraded the fuel rail and lines in the engine bay along with the pump in the tank but don't want to upgrade the undercarriage fuel line at this moment. One idea i had was using a small piece of hose like the OEM application with a barbed AN fitting. Would that be okay with the type of pressure it would be under ? I'm also open to suggestions.

 

This may be in the wrong spot

 

Yes, use just a normal fuel rated hose with fuel line clamps.(the smooth ones)