1968 gto 400 engine how to change a fuel pump?

It is very easy. The pump is located on the drivers side front of the engine. PROPERLY raise and support the vehicle on jack stands. From below the vehicle, first remove the two rubber lines that run to the gas tank, and the single steel line that goes to the carburetor. Then remove the two bolts that attach the fuel pump to the timing cover. Remove any old gasket left on the timing cover, bolt the new fuel pump and gasket on, then reattach the lines. Start vehicle, check for any fuel and oil leaks, correct if needed. Lower vehicle, you are done