+1 on the lift pump recommendation. There's a bunch of them out there but I used one of Kennedy's pumps on my former LB7. Took care of my prime problems and fully used the available filtration area of my filters.
"Chessy56"
So. Milwaukee, WI
'01 2500HD, LB7, ~440K miles
"Stock" engine. Dual fuel filtration system with Kennedy lift pump, BF Goodrich Commercial T/A Traction tires (sold to a dude from Texas- it's living a warmer life just fine down there now!).
'17 2500HD, L5P (Happy Birthday/Merry Christmas to me!!!) Currently bone stock, 120K miles.
"Socialism is a philosophy of failure, the creed of ignorance and
the gospel of envy. Its inherent virtue is the equal sharing of misery."
Winston Churchill