COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.73 Ratio - Big Block Ford / Cleveland / Modified Fender Brace Part of the DUI's performance

Part of the DUI's performance comes from the custom calibrated advance curve

Retro Muscle Car Look and Feel

Drilled / Slotted

High rise design features a beautifully detailed Mustang emblem

electronic oil pressure and water temperature gauges with bright blue readout and graduated scale for increased readability

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.73 Ratio - Big Block Ford / Cleveland / Modified Fender Brace Part of the DUI's performanceThe 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