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?

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2Bones.com 2000 Saleen S281, 8 lb Roots Style SC, Spintech X-Pipe, Hi-Flo Cats and 3" Exhaust, MAC CAI, .373 Gears, RAM 900 HD Clutch, Steeda Adj Clutch Cable and Rear Sway Bar, KB Rear STB