I was today years old when i found out it's called swaging

Not exactly the same but i always just did the first step of a double flare, but not mashed completely.

been doing that for 45 years

Had a few days off from work and turned the wrench a few more times on her this weekend.

Got the reed float and the fuel pump installed. Bench tested it wet and all works there. The sleeve was interesting to slip over the pump. Used long drill bits to reduce the surface tension and enlarged the sleeve. Slipped right in. Installed weather-tite connections on everything but decided to just use blue 12v male/female terminals so there is more surface to carry the amps. Soldered everything, heat sink, etc.

Painted up the fuel tank straps and added insulation from my drywall 😂.

Started installing the fuel lines but i forgot about the weld-in subframe connectors. That was a PITA. opened up the subgenre and welded in an oversized pipe so i can maintain a rigidity.

Have a few more connections to make where I swagged the pipe
Ran out of hose clamps.
Next up is the electrical, I am trying to source a relay/fuse box so i can make a cleaner install of everything aftermarket in my ride. Local shops don't have anything helpful 🫤

EFI is a sweet upgrade. Check out Marine electrical components. I find them to be of higher quality in general. West Marine is one of dozens of places that sell really cool relay and fusing components.

What your doing in your part of the world must be very challenging and a lot harder "running out of those clamps" than doing the same conversion here in the U.S.
Good on You