Roots Style Blower Pulley Sizing for Extra Boost?
 

I am wanting to get a little extra boost out of my M90 Eaton "Saleen" roots style blower, since I am rebuilding a bent shaft anyway. Figure I should get a little more boost, but do not want to risk blowing stock internals.

So my question is this...what size pulley comes stock on my 2000 S281 and/or that of an 03 Cobra? It pushes 8 lbs of boost, so what pulley size would push me to 10 lbs, or even 12? How risky would 12 be on stock internals?

I always here the common upgrade for the 03 is a 2.93 pully. I beleve that is good for 15psi. But you would have check with Saleen to be sure.

After the shaft rebuild at $800, I decided to keep her stock. Have had too many issues recently, and just can't afford to play too hard on this ride. Too many toys, not enough time...