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With yout IATs so low, it's a no brainer to go down 2 pully sizes, as long as belt slippage doesn't become an issue. More torque everywhere, and more HP too.
The more you push it, the sooner the bottom end will go. It just wasn't designed with this power level in mind.
I'm worried about the boost a pump. Overrevving the stock pump is just asking for trouble in the long run. Do what Tim suggested, and install the dual pumps. Then you're safe, no matter how much power you end up making.
Too aggressive a cam will kill fuel consumption, kill driveability, AND kill low end torque. You need to keep the port velocity up to maintain fuel atomization, otherwise all the fuel won't burn, it will just drip out the tailpipes. Go wild where ever else you want, but on a street car, stay conservative on the cam.
I'm hoping you come up with a great combination so I can have Tim incorporate it in my next engine!
Ric
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