It is on the inside of the frame more or less under the drivers door. You also need a special fuel line tool to release the clamps. Get the metal one from NAPA it works better than the plastic ones. They can be hard to get off and you may need to spray WD-40 in the fitting and spin the tool in it a bit to get the filter to come off.
welcome to the FORD forum Ikey. If you dont know what your doing, changing th efilter can take a couple hours the first time. I would buy it at Aoto Zone or other auto store and talk to the counter guy for a few minutes. This is not a screw driver and hose clamp job. THE new filters have 30-50 psi pressure inside and the fittings are a push on compression fitting. You do need a special "tool" to get it to come loose. They can be difficult to get apart.