Harland Sharp GM LS7 Rocker Arm Kit - 1.8 Ratio Adjustable 4122LRGRD and IndyCar aero kits are

and IndyCar aero kits are available as add-ons

3 or 4 Bolt Flange

Bumper Support

020'' valves might require aftermarket pistons notched for valve clearance

Harland Sharp GM LS7 Rocker Arm Kit - 1.8 Ratio Adjustable 4122LRGRD and IndyCar aero kits areProduct Description: Rocker Arm Pedestal Mount 1. 80 Ratio Adjustable Full Roller Aluminum Orange Anodized GM LS Series Set of 16 Since the 1950s, Harland Sharp is the leader in roller rocker arm technology. Sharp manufactures roller rockers and rocker components for a variety of applications. Their rockers are made from lightweight aluminum and anodized for increased durability.