Hi all , just given my VS V6 new set of head gaskets ( it was using lots of water).I have found almost all the pushrods and rockers ( only 1 good pushrod and rocker) are very worn at the rocker end . Got a used set off a VX and they do not fit . Looked up and Mace have a rocker kit that they say Fits VS to VY ?. Mine is a series 1 VS , does anyone know when the head castings were changed ? The later rockers are pressed and sit on a built in pedestal ,same mounting height on the head but slightly different bolt pattern on the head casting. Thanks Mark.