A few more questions:

Do you need to put any sealants on the rubber o-ring seal? What about a little Permatex brush on red high tack to hold it in place?

I know you have to drain radiator...it is easy to get to the drain cock? I heard its difficult to get to. If accessing the drain cock was a pain,or you had to remove a ton of stuff to get at it, couldn't you always take off the water pump and have it drain out at the pump housing?

Will I need a clutch fan wrench for the large nut or can you get away with using a large adjustable wrench?