So I want to upgrade my hemi motor got tired of it stock lol my budget is from 300 to 500. any suggesting? I want it to respond (torque) as soon as I step on it since im drifting my go kart. I know I should replace my piston rod, flywheel, valve springs, Cam, air filter, and im not sure if I should jet the carb or replace it with a better one? what would be the difference? Im asking for your help because I don't know what best combo will work best with one another.Like I mention above I know what to replace (let me know if I miss something) but don't know how still valve springs, what carb or jet, how long rod, what cam, and how many degrees on flywheel. Ps I will be removing governor