Use the PROCOMP Blue!
PROCOMP BLUE

I was having fuel lean out problems as well with my blow-through supercharger. Just wasn't pushing enough pressure. I up'd my fuel line diameter to 5/16" and went with the Blue pump as well as a Mallory 4309 Regulator.
Mallory 4309

At idle with vacuum, my pressure is around 7-8 psi. When during fuel boost, it increases to 14 psi. I am currently using twin 32/36's with 115 jets on the mains and 140 jets on the secondarys. Full Boost is at 10 psi.
I fought lean out for along time and didn't want to pay the Holley pump price. The Procomp is the same as the Holley except a lot less expensive. At $59.99 its a steal and it even comes with an adjustable lighter spring to reduce the pressure to around 7 psi if you want to reduce the pressure.
Procomp has many other items. Fuel Regulators as well.