I would say 60# injectors. Im running 80s with twin 340 pumps. Pro charger or any tuning shop can make a better call. I got a mustang mag at home explaining which injectors and pumps and how much fuel pressure you need between return-less and return style fuel systems. Ill see which mag it was and you can see if u can find it online.
1999 Cobra black with medium parchment interiorJLT CAI, RWR motorsports tune, Pacesetter Longtubes, o/r xpipe w/cutouts, Flowmaster Super 44s, built t56, Kevlar clutch, Nitto NT05R, Ford Racing 4.10 gears, MMR 900 rotating assembly, vortech v3 si, twin aeromotive 340s, aeroquip lines, 80lbs injectors