MID-LIFT Advanced Rocker Arm Tech, by Jim Miller: Shattering the Myths of Rocker Arm Geometry, Cam Selection & Cylinder Head IntegrationA pioneering professional's comprehensive insight to the previously confidential world of precision rocker arm design and application to Over Head Valve competition engines. Written by the founder of the Patented MID LIFT roller rocker arm geometry for internal combustion engines, and fully Illustrated, Jim Miller explains the critical elements of valve train design and system integration with in depth tech and terminology defined for pro and novice