It has to be placed as close to the tank as possible and above it I believe. Electric pumps to best at pushing the fuel not pulling, so having it back there is better. Brand.. Not sure.
You're surely right. There's another thread in the forum around this topic.
Otherwise I just needed the pump to refill the float chambers to get the engine started faster. After that I would rather turn it off with a switch from the inside. It's tempting to mount a pump inside the engine bay...