How so you replace a fuel pump on a1987 Buik Se Sabre?

http://www.fixya.com/cars/t11595295-install_fuel_pump_in_1987_buick_lesabre

https://www.youtube.com/watch?v=s_9zhytma8s --- 10 minute video of which 9 minutes are the guy telling the world how cool he is. But there is a nugget in there if you can take it. Bottom line is the pump is in the tank and access is through bottom of trunk. Please please take the advice of disconnecting the Neg-- Black battery terminal before you do anything else. If the wires short during your work, the fumes can ignite.