Kibblewhite Precision Cylinder Head Service Kit 80-82400Everything needed to completely refresh upgrade the cylinder head Include lightweight racing valve spring kits with steel or titanium valve spring retainers, beehive or dual valve springs, steel base washers and Viton valve stem seals Black Diamond or White Diamond stainless steel valves for increased longevity (valves are standard size) C630 bronze valve guides (standard size) Top end gasket kit including base gaskets, engine case gaskets, exhaust