fuel pump questions

I know what the gph is for the pump that is on there right now. according to oreillys part # M16216 precision fuel pump it is 33gph. my question was is that enough to supply enough fuel for this modified 440 engine. The one I was looking at from summit CRT-M4845 I believe it is a carter is pumping 120 gph. I think that is a big difference. I don't know.