Thank you for the detailed post. I have a 2010 SEL AWD (manufactured in 2009).
In my case, I ordered the oem pump, unbolted the back seat, pulled up the carpet and was greeted to a tiny access hole instead of an access cover. I guess all Edges were not made alike. I ended up bringing it to a shop so they could drop the tank and install the pump for me.
Part number: 8T4Z-9H307-A
The reason I changed the pump was because it was making a pulsing sound. Youtube video of sound here:
https://youtu.be/zc7mBZUPuq8
Ford Instructions to Service Sender and Pump Assembly - Fuel Tank.pdf