Blow thru carb is the way to go these days not draw thru. There are guys making over 1000hp with the 750cfm carbs.
Make sure the GSL392 is the high pressure unit.
Also, you can have one support your normal driving and the second come on at a specified boost level. I'm told the "off" pump will be fine in the off position and act as a dead head and not allow fuel to push past it.
