Fuel Pump

In another thread I asked if a 50 gph @70psi Vortech T rex Pump would be sufficent for a Big Block Mopar? I am asking because the person who has a procharger I am looking at has this new in the box, but I dont want to buy it if it is not sufficent on a 383 with approx 10-12lbs of boost. If you need more to answer the question just ask.