JBR Engines Ported K20 PRB Cylinder head - *NEW*

JBR Engines Ported K20 PRB Cylinder head This is a brand new built head. Never been clamped to a block. This head has the screw in style freeze plugs. Features the following: JBR Engines CNC Ports JBR CNC combustion chambers to 87mm Ferrea bronze guides (plus installation) - cut to port shape Ferrea Competition Plus valves on Intake and Exhaust  - OEM Sizes Ferrea Drag Race Spring kit - KT4004 - Viton Seals, Ti Retainers, billet keepers, spring seats JBR Newen Valve job Assembled by JBR Normal value is about $4000 if all bought outright