Definately, but the way to do it will be to run it on a dyno and burn a chip for it. The returnless fuel system is not a performance issue. It is an emissions issue, it is used to as Ford will describe reduce gas vapors, somewhere, i don't know. There is no fix for it, but utilizing it as best as u can. U cannot put like a adjustable fuel pressure regulator on those cars cause the FPR works by reducing the fuel going BACK into the tank. Bigger injectors and a computer chip will fix the problem. And maybe a bigger pump. The 4.6 LOVE boost. Look into a supercharger or turbo for max gains.
Texas Jams here in San Antonio made a 99 run 11.50's @122/3mph ON BFGOODRIDGE DRAG TA's. That was with a s-trim blower and just a few add ons. They quoted 5200 for all the work, dyno time, blower and parts. He just got kicked off the new track at a competition for running 10.6@127/128mph that was with a 100shot nitrous.
Point is with the svo heads,intake, blower some time on the dyno and a chip u could run those numbers if not better.
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