This fuel pump is located in the fuel tank and can only be accessed by lowering the gas tank from under the car and then removing the fuel pump from the top side of the tank. It doesn't take a lot of special tools to replace but having a car hoist/lift makes the job a lot easier.
There will be 2 straps that run under this gas tank. They are most likely going to be attached and unbolted from the front of the tank. Be careful to drop the tank down only part way and then disconnect all fuel lines, wires, and the fill tube from the tank. It is very easy to break fuel lines and parts of the fuel pump housing. Release the fuel pressure ahead of time so you don't get gas sprayed in your face.
Have you tested and confirmed that this fuel pump is bad? This is a big undertaking if it is just a guess.