If you have 435hp set up you are at around 365rwhp. You should be at 430-450rwhp with the 3.4 set-up the others and myself have. It will depend on what other things you have done. I would defintely do the twin fuel pumps for peice of mind. If you don't notice another 65-80 rwhp I would be very surprised. Do you have 3.73 gears?
If you don't mind me asking, is 450rwhp not enough? If so, I would defintely plan for a forged bottom and better clutch just to be safe. In my experience, it costs a lot more to fix it after it blows than to bullet proof it before it does.
I agree with Mickey, you could blow at 450 or not until 550. Depends on the car, driver, gas, tune etc.
Good luck and keep us posted.
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2006 Saleen SC Silver #458
2002 911-sold to buy Saleen
2003 S2000-sold
1997 SVT Cobra-sold
1988 GT-sold
1986 Cobra (Canadian)-sold
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