Used to have a 440 in my Challenger, never a fun job!
Used to love the car magazines suggesting "change them when you get to the track" Ha!
I'm sure I used a couple of different box and open end wrenches.
I think since I had to lift the car anyway I would remove as many as I could from underneath.
Manual steering gives you more room, I don't recall whether I had to loosen the headers on that side or not, definitely try it since you won't lose any coolant.