Ok I've been working on my math skills, which are still severly lacking. But here'* a figuring:

6.875" crank pulley with a 2.2" supercharger pulley spins it 18,750rpm at a 6000rpm engine speed. The supercharger is 62ci and figuring a healthy 95% VE it pushes 58.9 CI each rotation. 58.9CI spinning at 18,750rpm comes to 1,104,375 Cubic Inches a Minute

Convert inches to Feet and we get 639.11CFM.

6.875" crank pulley with a 2.55" supercharger pulley spins it 16,140rpm at a 6000rpm engine speed. The supercharger is 62ci and figuring a healthy 95% VE it pushes 58.9 CI each rotation. 58.9CI spinning at 16,140rpm comes to 950,646 Cubic Inches a Minute

Convert inches to Feet and we get 550.14CFM.

So here'* where I'm getting retarded. Assuming this works like this:

550.14cfm divided by 9(psi) comes to 61.1cfm per PSI. Since everything but the cfm stays the same we could assume that adding or taking away 61.1cfm would result in a 1psi gain or loss. Assuming that'll work in la-la land, the 2.2" pulley should put you at about 10.4psi. Which since it seems to fit where it should, maybe I'm not as retarded as I think...or maybe I am and its all a coincidence...either way I'm gonna run with it.