i do not see this rear housing or the water pipe. manual sez to remove thermostat. i will do that but there is no rear housing in manual. water pump gasket needs replacement. i kant find one anywhere. lots of housing to block gaskets which they call a water pump gasket but it is in fact not. when i have an fsm over 600 pages long and start disassembling things that arent in there i get to go to the ATM and withdraw more money than usual.