[FPB111]

That sounds like a great idea. Please do it and let us know how it works.

Just some thoughts on your plan:

What will you use to hold the cams in place after you pull the "valve covers"?
Will you have to pull the engine to seal all of the coolant hoses?

What is the next step after you see water running out of the heads?
What if the water doesn't dribble out of the heads but just fills the oil sump?

Will you pull the pan to see if it dribbles out of the oil pump pickup?
What is your planned next step after you see the oil/water dribbling out?

When the engine is warmed up and running doesn't the coolant get pressurized?
Do you see water dribbling out of the heads then?

Did you change the split AOS hose with mix running out of it yet?