powerdyne pulley sizes

Anyone know the diameters for the powerdyne pulleys and which setup they're for? Ive got a SC pulley thats about 3.3" with a 6" crank pulley. I also have a 7" crank pulley, and I think a SC 3". I want to create about 6 .lbs of boost or less, no more. I also dont want to overrev the SC. If anyone has the "stats" on these pulleys and what setup I should try, let me know, thanks.
By the way, current setup is stock bottom, cc305 on 114, 1.5 RR but probably going with 1.6's when I throw the SC on. Jet Hot LT's with hooker 3" catback., 58MM TB, 3.42's.

They're 3.12 for the 4.5# 2.93 for the 6# and 2.70 for the 9# from powerdyne.
I believe ASP Racing makes smaller ones.
In my car the 6# pulley only made 4.5 but I didn't rev it past 5400 rpm.
The 9# pulley made the car a real torquer with the power coming on faster and stronger in the mid rpms
The 9# pulley was making about 6.5# at 5400 rpm before I put it away for the winter, but I got pinging and have to hook up my water/methanol injection.
Something to look forward to for spring while I'm driving my Taurus winter car.

http://www.powerdyne.com/beltsnpulleys.htm
www.aspracing.com

I found a pulley with a diameter of 2.25. I was thinking of getting that but didnt know? I also plan on getting water/methonal injection. You think that pulley is to small and will blow up my SC or will I be fine?

Thanks
Matt

I think it's too small and will blow the internal belt if you rev it past 5000 rpm much but that's just a guess.
I'm gonna hook up the water injection on mine with the 2.70" pulley as I'm getting pinging.
Thought I blew the engine but only blew the air inlet tube off the TB. That was a good scare that turned out to be nothing. Lucky me.