Cut the 6mm line off, flush with the tank, and weld it shut.
The install a bulkhead fitting somewhere close to the fuel level sender, that you can still get your fingers to.
Install a drop hose with a filter sock on it, onto one end of the bulkhead fitting, drop it in though the fuel sender hole, and then up through the new hole.
Screw the retaining nut on to the fitting, and you are done.
Here is the one I used, just used an old AN fitting machined to match the end of the 18mm fitting.
Or this one for a little more if you don't have someway to machine an old AN fitting to match what the filter sock needs:
You probably want to do the same to the return line, since at idle you are returning almost the full volume of fuel being put out by your pump.
You of course don't need the filter on the return line, but you should still run a drop line so that you are not aerating the fuel by it spraying into from above the fuel level.
"All of a sudden it started making noise, then started losing power. I limped the car home and tried to get it up the driveway, the engine just died."
Why do people do this?
A $100 tow bill is never as much as the extra damage you cause by trying to "limp the car home".
Don't be that person !