I agree with Pat about not posting too much on posts such as this one because it starts off with the op not knowing what he has but wants to make 500hp---answer any single item and then others mis interpet the answer and later on it will rise up and bite you--it takes hours going over details with a customer to iron out there needs, wants,haves and havenots, and to get in on the main floor of build such as this leaves no way out --
most likely the job won't be built as recommended, yet you become responcible for the results because you responded and/or make recommendations.