Mopar specialists Hughes Engines got the nod when it came to choosing rocker arms and pushrods. You can reuse your stock rocker arms if you'd like, but the stamped rockers can deflect and become inconsistent at high rpms and high valve lift. Not all factory rocker arms are made equally, either. Though they should have a ratio of 1.5:1, it's been generally accepted that the actual ratio is closer to 1.4:1, with some measured in the 1.3 range. Hughes rockers are CNC'd aluminum, come in either 1.55:1 or 1.60:1 ratios, and have improved oiling paths through the rocker.