Which one flows better, factory 6 blade water pump or 8 blade

It is two top halves of a Ford Explorer shroud. The bottom of the Explorer shroud wasn’t close, so I used two top halves. I really like the two piece feature for access. I am too cheap to pay for a repop, this was $5 at pick & pull. I can post some details if you are interested

I modded my alum shroud to be split in the middle , a lot of g m m pick ups are that way .