http://www.importperformanceparts.net/
that link will give you some good quotes on stuff to buy for your car's engine. just click on ford then go to engine kits and it includes everything to safely run 15-20 psi. but its about 1k just for the internals, you can get turbos and the other fun stuff on there also.
also J-FLow
a fuel pressure regulator is the the best thing to use if your using stock injectors, it will allow you to make more fuel flow through them even though there stock, so i would recommend that until you upgrade your injectors.
curtis