For a fuel pump you should look for something that is going pump enough volume & be @ least 3-5 psi above of your target boost pressure.
You should talk w/turbo6 here on the BB. He has been turbocharged & blowing through carbs for a long time.

I have only supercharged & blown my 250 6 through 3 DCOE 48 MM Weber's & only was able to get 8-10 psi out of my Paxton, planetary drive damm balls would slip

MBHD

12 port SDS EFI