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We're using Jesel 1.6-ratio, shaft-mounted aluminum roller rocker arms for our application. The Jesel rockers bolt right onto our Dart heads, offering precise valvetrain stability even at much higher rpm than the 7,000 or so our small-block will see. If desired, Jesel offers rockers of up to 1.8-ratio for this application, and can accommodate valve lifts of more than 0.800 inch. Good luck achieving that kind of lift with any LS engine.