-just a tip-
Cut a piece of cardboard (bankers box, or moving box is a good donor) to fit/cover the radiator on the engine side. This will save you some grief when you get to that "Oh S**T!" moment when the wrench slips or a bolt breaks & your tool &/or hand tries to go through the radiator. Saves the rad, & your knuckles, too.

That's what I call a good tip.

Thx.