New guy here. I am installing an 04 5.3L from a Tahoe into a 55 Chevy suburban. Have a couple of questions.

How the heck do you remove the fan from the water pump? I assume there is a special spanner wrench required, but are they left or right hand threads?

Thinking about using the gas tank with fuel pump from a Tahoe, pickup or suburban for my transplant. Does anyone have any dimensions of these tanks?

Thanks for any help.