This is what he's talking about (showing a 2500 non K):
You can raise each of the Turbo mulit's by 4 each to achieve a nice small OC.
It's my opinion that you should never touch the BCLK or if you want to do it anyway, make 103-105Mhz the absolute limit. Anything over 105Mhz starts to get dangerous for rest of the system.
In all honesty, it's just not worth it. Too many things can happen and none of them are good. Just use the Turbo multi's only.