Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.65 / 1.65 Ratio - Full Roller - Dart 15 / 18 Degree Heads - Small Block Chevy (Set of 16) JOE25322-B From the factory

From the factory

Copper Alloy Conduct Less Than 50 Ohms Resistance

1975-1978 American Motors Pacer

Two 6 AN Female O-Ring Inlets

Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.65 / 1.65 Ratio - Full Roller - Dart 15 / 18 Degree Heads - Small Block Chevy (Set of 16) JOE25322-B From the factoryProduct Description: Rocker Arm Pro Series Shaft Mount 1. 65 1. 65 Ratio Full Roller Aluminum Natural Dart 15 18 Degree Heads Small Block Chevy Set of 16 Dan Jesel realized early on that the success and demand for his high end valvetrain components was in part dependent on huge valve lifts, unheard of spring pressures and rpm that most thought was impossible. So he started on a 10 year quest to perfect the roller lifter. After nearly nine years of R&D