Im going to give as much info as I can possible think of, and any help would be greatly appreciated....

Alright, its:
89 Camaro, IRoc, 350 SBC, All stock, except MSD/Accel ignition components
2x t3/t4 turbos, bolted on headers in engine bay
Megasquirt fuel/spark ECU
entire fuel system is stock

Will be running aout 6-8 lbs of boost
water/meth injection system

Now, My questions are
what size injectors do i need
what size pump do i need
do i need an adjustable FPR
Can any of the stock fuel stuff be used? IE: injectors, pump, regulator

Thank you in advance!!