you'll know if the pump is an issue as the fuel pressure will drop during a wot run (assuming injector duty cycle is good). Injector duty cycle will tell you if the injector is too small if the duty cycle starts approaching 85-90%+. The injectors in that motor (75's I believe) with an A1000 Aeromotive pump were perfectly safe. You may need another or additional pump at the 700 rwhp level, but I thought you had dropped the boost back with the larger blower pulley............
Jody