An improved GT Super Car or SVT Focus fuel pump with a set of 39lbs or 42lbs injectors should get the job done. Unfortunately it's not recommended to use the 03/04 Cobra injectors on any other vehicle because they have a specific spray pattern to the setup on the Cobra. Stock lines and rails are ok at that level. If you're talking wheel horsepower then I believe you'll be close to maxing out either of those fuel pumps and you could add a boost-a-pump for some extra peace of mind. However if you do choose to add a boost-a-pump you should first consider if you're planning on making more horsepower later on. If so you may want to go with a dual 03/04 Cobra fuel pump setup with a baffled tank right out of the gate. You can run that to about 550-575whp and if you go higher then that you could add a boost-a-pump then. If you don't think you'll go over 400whp then you should be ok with either of those pumps without a boost-a-pump.
2004 Comp Orange GT 5 Speed
Full Bolt On's, Long Tubes, Drag Suspension, 4.10's, 150 shot, Spec Stage 3 clutch, 3217lbs without me