COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford (Set of 16) 103-2801 1975-1981 Mercury Grand Marquis

1975-1981 Mercury Grand Marquis

1969-1985 Pontiac Firebird

Atop the Revolver X2’s aluminum substructure is a heavy-duty

Throttle Body Flange

the avid 4-wheeler was looking for more

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.60 Ratio - Small Block Ford (Set of 16) 103-2801 1975-1981 Mercury Grand MarquisThe 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