Water Pump , thermostat and such questions

[Pdwight]

Well the Good Lord finally smiled upon me and I got some time to get back on my P car this afternoon. I got the coolant drained and the Water pump and thermostat housing off....and yes there is that one bolt on the water pump &^%*%^

My water pump impeller was just starting to rub and I could detect play in the pulley with my hand so it was time. My question is the gasket, it came off the water pump clean and off the engine block clean except it looks like more "stuff" need to come off to get it all the way off ????

Also with my new thermostat housing, I received an aluminum tube and two notches cut in at the top...almost like a special spanner of some sort ???

Thanks in advance

Dwight