The exact location of the fuel pump in your Toyota Corolla is dependent upon the year of the Corolla. Most model year Toyota Corolla fuel pumps were mounted on the front side of the gas tank.
The 1997 Toyota Corolla fuel tank can be drained by removing the fuel tank fuel line. Most of the fuel will drain out. To completely drain the fuel tank you will need to remove the fuel tank.
To replace the fuel filler neck on the 95 Toyota Corolla, one can sent one's Toyota Corolla to a local service shop. One can also attempt to replace the filler neck by oneself.