i was looking itno some pullies for the jack shaft and supercharger. i see theres like 5% and ten % for both but have no idea how this work. i understand the faster the supercharger spins the more airflow but i was wondeirng how much you can go on stock fuel pump and injectors. also ihave a stock hb and pulley and i was wondering if i take them to a machine shop if theyll be able to check and c if they can zero balance them out. also with the super charge or jackshaft pulleys should you install underdrive pulleys on water pump alternator and crank?. jw guys thanx