Yes, the 99 svt FPR that I have runs 45psi idle and 53-55psi WOT.
It would be an easy bolt up mod for a non-svt motor, and it would give good results.
Ford rates their injectors based upon 39 psi flow rate. So your 17# injectors at 39 psi would act like 20# injectors at 55psi.
WOT at 45psi would make the 17# injectors act like 18# injectors.
That would be a heck of an improvement.
warmonger