These come with intake manifold upper and lower, Exhaust manifolds, cams, cam gears. Have looked over them and valve thickness is good. Will need a service with a valve re-seat and cleanup. Motor ingested water making the bottom end a mess but left top end of motor alone. (Core charge for a pair of bare rebuildable heads is $1500 alone) Also have a pair of TT heads which seized a cam. These come free with heads.