Need Advice on Machining the Intake Surface of the Head (gasket crush)

I have always used the Mopar numbers. Never, ever had a problem. Not sure why people need to question the people who had the design specs at their disposal?? And I always mill both sides of the head. And I mill the heads of any engine I rebuild. If you want to cheap out, you can probably get by. You only have to do it once. Once the heads have that many heat cycles they don’t change much.