Ok wait. What exactly are you talking about when you say a "booster pump"?
What modifications are done to your car already?
Blue injectors are the stock 39lb injectors.
Yes you can run a 2.76 upper and 4lb lower and your doing it right by getting a ported blower first or you would be waisting your time with the lower..you will need a kenne bell boost a pump make sure it is a 40 amp so you arent blowing fuses a 20 would be too small... blue injectors are stock you need 60lb injectors for that setup and a mafi or bigger maf .
I'm doing something similar, I currently have a 2.93 and stock lower with an unported blower and plan on dropping to a 2.76 and a posi port. I will be keeping the stock lower for now but I know I will need similar upgrades, such as the injectors, bap, and maf sensor. I was just curious to know which "booster pump" I wil need, the 20 or 40. LoL