what fuel pump?

I just finished my 340 stroker now 525hp with 465 ft lbs of torque running custom built holley 750 double pumper.All my buddy are using mallory 140 gph on there cars with as much engine are more .Then I have a friend that says I need 200 plus gph fuel pump is this over kill? 1968 Plymouth barracuda formula fastback should run low 11s.

THANKS!!