How big of injectors can a Fleece powerflow 750 support
 

I'm looking to get bigger nozzles for my injectors (only about 30k on injectors) right now they have 60 horse injectors. What can a Fleece powerflow 750 support? I was thinking 75% over but if the pump could support 100% over I'd go that route to support future air upgrades. Still building the truck but right now I'm just over 550 to the wheels according the the compd calculator from my track time/speed.

You could get 100% over and then get HP or UDC pro and have your tuner make and adjust tunes so the injectors are not draining the rail. I don't know if those injectors would drain the rail or not, but with good custom tuning it won't matter since it can be adjusted.