You could put one of these anywhere. They are available at nearly any parts store.
Mr. Gasket 12S Fuel Pump
For decades I've carried a small electric fuel pump like the one in the link. The one I have right now, I took an old orange extension cord and cut it up. There is about six feet of wire from the pump to a pair of battery clamps, and another four feet to a toggle switch. I also keep about four feet of fuel line on either end of the pump.
These things have come in handy on countless occasions. From getting some fuel to someone who ran out, to replacing a failed fuel pump on the side of the road to get someone going, to starting fires in the rain with wet wood.
But...they are slow. The one I have now takes around 15 minutes to fill a 5 gallon jerry can. That's plenty to keep an engine running, and more than enough to fill up a beer can to get a fire started, and no one who ran out of gas is gonna complain about how long it takes to get a couple gallons to get them going.
But for regular tank to tank transfer duty, I'd want something with a bit more volume.