Comp Cams Valve Spring Kit - Dual Spring - 400 lb/in Rate - 1.070 in Coil Bind - 1.320 in OD - Steel Retainer / Viton Seal / Steel Valve Locks / Steel Seat - GM LS-Series - Kit-26925TS-KIT--Notes: With lightweight tool steel retainers. State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO