I did the one in my 73 350 car awhile ago.
Not too bad, simply put (Current time constraint prohibits listing details)
Remove the hood, radiator hoses, and any brackets / clips / ground wires attached to the radiator and support.
Cooling fan comes out along with the shroud.
I left the radiator attached to the support and removed the 6 bolts to release the assembly and pulled the whole thing out as one unit.
One thing that did irritate me was the replacement unit that I received, had slight differences. It was missing the upper fan shroud support holes. I went with Dewitt’s and electric fan combo so it did not affect me. I did save the original unit in case I want to repair it