[akdg87]

if you dont want to spend a ton on injectors (sell your 80's) and grab a set of the bosch 210's or the snake eater performance 1500cc. proven results with both of those in high HP applications. Im not sure how efficient the pump would be at 80 psi, but most of those pumps drop flow with pressure increase.

base pressure of 80 psi means you are going be upwards of 100 psi if running 20 lbs of boost (only assuming this because you have a 5.3 and are trying to make 1000 hp). the dekas may not even work at 100 psi; i wouldnt gamble the motor on some injectors.