There are two different 4G54 Cylinder Heads.
These are identified by the water port. The narrow water port suits the Pajero and the Triton. The wide water port suits the Magna. These vehicles are getting old now and the engines may have been replaced before. Swapping a Magna engine to a Triton or Vis Versa. Before you go and buy a new cylinder head it will save a lot of time if you check the water port on the head first.
See image to clarify the narrow and wide water port.
