Cool stuff. This technology seems to be driven largely by the Tuner crowds need for even higher performance fuel systems than come on their factory EFI cars.

You should be able to use a simple in-tank EFI pump that circulates fuel into your surge tank and then back to your fuel tank, doing away with the float mechanism.

You will need to ensure your surge tank is sealed and the fuel pick up in located at the bottom of your surge tank. and overflow or bypassed fuel is plumbed back into the sealed surge tank.

In other words you have a near 0 psi circuit from the tank to the surge tank and back to the tank. And, a high pressure circuit to your mechanical injection and overflow or bypasses back to your surge tank.