COBRA OR AVIATOR?

My car runs really rough when its in boost... im pretty sure the problem is my fuel delivery, im runnin 42lb injectors with the Walbro 255lph fuel pump.
I need some suggestions on which fuel fuel pump i should go with to support more horsepower, and hopefully smooth the car out some.
 
get rid of that Walboro pump ASAP!!!!!

it's not designed for the returnless fuel system and can die without warning.

the Aviator pump will be fine. it will work and be somewhat cheap.

the Cobra tank is better because of the baffles. but it's more expensive.