here is the truth of it.you need to be a tuner and not just logging.that means pulling plugs/reading plugs,evening out airflow,finding and tuning to your leanest cylinder,running proper timing,correct afr for the octane,looking at egts,watching in real time what the fuel system and afr is doing and making the proper adjustments along with preventative matinence.then comes the drivetrain and suspension.when you approach 100/125 hp per hole on the stock bottom end the cylinders need to be evened out,(i prefer pistons and main caps over 100hp per hole as the stock pistons like to crack from cylinder pressure regardless of egts and mains will split when it rattles) then 150+hp per hole can be achieved.if my post seems like too much work or to cunfusing then i would highly advise you to keep the car around 75hp per hole and have someone do it for you.i am speaking solely from experience not theory.