Most of that style of pumps aren’t very happy lifting fuel up and out of a deep tank.
They’re much better at pushing it out.

There are a few vendors that would have in tank pumps that would be a better option.

Walbro makes quite a few varieties of them.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads