*remove radiator/shroud if in the way
*any belts that may need to be taken off
*fan if it has one?
*remove water pump
*clean up the rear housing ( guessing your replacing the front )
*some form of gasket glue
*new gasket
*new waterpump on
*put everything else back on , leave for a day to let everything set?
*start car with no leaking water WIN.
Ive never actually replaced one on a 4k but have done so on my cressida and it's a piece of piss.
not really an easy/hard way to remove, only comes off one way.