New and improved.
Water neck with heater hose for use when using a VVL head on a RWD block. Replaces the FWD neck on the head. Allows you to retain the RWD coolant temp sensors and coolant routing.
Rear water bungs are -10an ORB. Our optional hose and fitting kit will allow you to loop the coolant line back to the thermostat housing to allow the thermostat to open when engine is warm. We supply a 3/4" barb fitting to allow you to run the heater core hose or a block off if you are not running a heater core. Or you can make custom lines using AN fittings.