none YOU have to upgrade the valvetrain YOU DONT NEED TO PORT THE HEAD!!!!!use that money on dualsprings and tt retainers.and the blox are fine,i like the specs on the todas myself with the even duration..1800$ is not near what you need to be spending your build should be around 700-800 for everything well if i was doing..unless your going all forged hbeam rods/pistons then 1600 should right but other wise your spending more then needed