you didnt say what you are trying to accomplish? If you get to 430 HP that will get you to 350 or so at the wheels.If you drag race thats a mid 12s 3400 pount car. If you road race then w/e formula fits your needs.
Make sure you say what the application is,because some of the helpers will go on and on as to what gewars you need for what cam,which may or may not apply. Road race cars ,(in my opinion) need a different power band than drag cars and street cars again are quite different.
fuel economy might come into the formula somewhere also,that makes a difference to the a/f ratios needed