COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Small Block Chevy (Set of 8) 1030104 They work in most Small

They work in most Small Block Chevy heads with no machining

1973-1973 Chevrolet MalibuFits all B&M Pro Stick shifters

2009-2011 BMW 750Li

2014-2015 GMC Sierra 1500 Crew Cab Pickup

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Small Block Chevy (Set of 8) 1030104 They work in most SmallThe next design evolution of the Hi Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision sorted needle