COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 8) DB-SMA-M MSD Atomic EFI Master Kit

MSD Atomic EFI Master Kit 2900 Includes Throttle Body/Power Module/Wide Band O2 Sensor/Handheld Programmer/Fuel Pump Kit (2920)

Side mount kit

Each wire is custom printed with the circuit identification as well as using GM color codes for easy installation

vacuum fittings

376 lb/in Spring Rate

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 8) DB-SMA-M MSD Atomic EFI Master KitThe 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