Ok thanks for the extra info.
Your information is correct. The pump always sits on the right side of the vehicle.
It's accessed through a removable panel under the rear seat bottom.
If your right level sensor is bad, you'll have to replace the whole pump and level sensor assembly. They aren't sold separately.
Normal labor time to replace the fuel pump is 2 hours or less.
To remove the pump. pull up on the front edge of the rear seat bottom. and slide the seat out.
Remove access panel on right side.
Using a brass punch and hammer, tap the lock ring counter clockwise to loosen. Unscrew lock ring, remove hoses and electrical connectors, and pull the pump out.
Slide the new one in, with a new gasket seal.