sixto -- thanks!

That's exactly what I was referring to. In order to measure the piston crown measurement on all 6 cylinders, I am going to have to rotate the crank with the head off.

You say that will eliminate any indexing to the cam.

and additionally, as you say, I have to be worried about the IP timing

So, what is the best way to take the head off and take measurements of the pistons in order to determine any bent rods while maintaining chain timing? I will be right there and seems a shame not to do that.

Do I absolutely have to take the chain apart or can I take the whole cam sprocket off to eliminate that step on assembly? I don't have the chain link tool, so that would be a big help.