I'm running a Carter 6903 on my 383, same flow and press. as the 6902, feeding a 750 DP'r with no problems now. At first the 8 psi was lifting the carbs float needles so added a regulator and set for 6.5 psi and problem went away.
That's what I want to avoid is have to install a regulator. I might go with a factory pump and go from there.
BUT... I guess I need to make sure that whatever I get it's got to feed a .030 over 360 with a 750 DP making roughly 400 HP.. will a factory pump be enough?
I would really like to go the electric pump route but I had a Holley electric pump with regulator on a big block 383...anyways that dang pump made the loudest hum. I bolted the pump with bolts all the way through the frame and used almost 1" thick rubber in between and it still hummed louder than the motor if I was sitting in the car at idle. I would cut it off it was like a relief to hear it go off. If anyone has any ideas of how to make a electric pump quite I would like to hear them. LOL!