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NOTES: -This product was not engineered for a V-6 or 4-Cylinder EB Mustang

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Proform Shaft Mount Rocker Arm - 1.50 Ratio - Roller Tip - Blue Anodized - Mopar B / RB-Series Racing Spark Plug TECH CODES: (E): MustScorpion isProform Extruded Aluminum Roller Rocker Arm 66868 1. 5 Ratio Chrysler Big Block Precision machined Aluminum Lengthen Valve Train Component Life Reduce Wear On Valve Stem Tips PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from intelligent