its no big deal. fairly simple if you know a thing or two about cars or turning a wrench, if you have no skills what so ever you might want to take it to a shop.
follow the instructions in the how -to section about replacing the fuel pump.
for the first time you will need. about two hours,phillis head screw driver,standard screw driver, hammer/mallet,tin snips,and a paper clip to release the rear seat from the middle seat belt attachment. oh and a new fuel pump green gasket part #XS2Z-9276-AA
you can use a stock fuel pump $300 at dealer, or a focus svt smart pump $80 from dealer the focus the focus pump requires a little file to shave the connector to the different focus pump once its removed from the basket. its backward.if you need more info check out the fsvt fuel pump install in the dura-tech maintaince section.
oh yea i almost forgot , you need to release the shrator valve in the engine compartment under the throttle body.you want to do this after the car has been sitting for a while because that fuel sure is hot if you don't.
the problem i had was with the sock filter on the pump itself. unless your fuel pump is dead you can cut a hole about a 1/2 inch square in the L shaped filter and that will solve the cut out problem in the high rpm's with less than a 1/2 tank of fuel. turned out i didn't " need " a fuel pump just a clean filter which lucky us the dealer only sells as a complete $300 contour svt fuel pump unit.
