In the originals, when they connected the tanks they did them midway along the tanks and the line crossed through the cockpit to the other side / tank. So the cross over pipe ran under the drivers legs. Not a good safety idea.
So two or three fuel pump system?
I would suggest.
Start with a swirl tank, either mount an EFI pump in that to feed the engine or have an in line EFI on the lowest outlet, through fuel filter to fuel rail, at other end of rail fuel pressure regulator and back to that swirl tank. This feed goes back to the feed about 2/3 up the tank.
So that would allow your engine to run continually bit has a limited fuel volume.
So now you need to keep that swirl tank full. Three pump system
So from right hand tank outlet to filter to low pressure / carburettor fuel pump through non return valve, to T piece connector to swirl pot , this is the connection about 1/2 way up the tank. And the return from the top connector on the swirl tank back to a second T piece to solenoid valve that opens the flow when fuel pump is turned on and the return to the right hand tank.
And from left hand tank the same thing, tank tofilter to pump to T piece. Return T piece to solenoid to return left hand tank.
Select either right or left tank and that low pressure pump runs, to fill swirl tank, the High Pressure EFI runs continuously when commanded by the computer system, (generally a three second run on ignition turn on topressurise the system, and will run so long as the engine is turning. Stall the engine and the EFI pump will stop)
Two pump systen
Requires EFI pump for engine running
Tank to solenoid valve to T connector, to fuel filter, fuel pump to swirl pot, return from swirl through the second T to a second solenoid to return to tank. Both solenoids are open when right tank selected and closed when off or left tank selected.
And the same left tank solenoid to the T connector, and return from T connector to solenoid to tank.
Both fuel bumps can be controlled through relays from the EFI computer to run continuously as mentioned above.
If you don’t like the solenoids you can replace them with a Pollack valve.
Ian