RASP pump, setting pressure and volume. Aeromotive Bypass Regulator?

[Blacksdieselhp]

I am assuming with the rasp, you set your desired pressure with the regulator that comes with it. So you just put a stiffer spring in for more pressure, right? And I guess a smaller pulley on the pump for more volume? What is it set for from KO? I know the regulator is 12 psi, but does anyone know the volume with the supplied pulleys? I am thinking of using an aeromotive bypass regulator instead of the one that came with it. Then I can just adjust when i get the Modded CP3 on. What do you guys think?