New replacement cylinder head Includes cam caps and cam cap bolts (where applicable). Includes C630 (nickel / aluminum / bronze) valve seats and guides (where applicable). Competition valve job (where applicable). Shortened valve guides to accept higher lift cams (where applicable). Unshrouded combustion chamber. Blended bowl seat to port. Stock shaped ports. Made in the U.S.A. Note: Does NOT include valves, springs or lifters; these are sold separately.