Why not "troubleshoot" things instead of poking & hoping with replacing stuff?
pop the fuel line off the filter, pop on a new line running to a bucket. Jumper the green terminal near the passenger strut tower. Turn the key on in the car. You should hear the pump kick on, and fuel should flow from the filter.
You can pull the entire fuel rail off the manifold, and put it in a 5 gallon pail or something similar. CAREFULLY have someone crank the engine for you, you should see each injector fire. They fire in pairs (1&3 and 2&4 i think) Observe their spray patterns, and make sure none are leaking. Careful when doing this that you dont remove any of the injectors, or you'll damage the o-ring seal around it and it'll leak like crazy.
Replacing the filter is not a bad idea. But fuel pumps can get very expensive, as can injectors.
If you do have to replace the fuel pump, replace it with a 190lph Walbro performance pump. They're cheap, like $70 shipped on ebay. Dont bother with the 255lph, they're overkill, and they are really loud when they run. An OEM pump is going to cost you and arm and a leg from the dealer.
Are you getting spark?