Help with Head Gasket selection

Regarding the copper rods.

Last night I was on another forum and the thread went in the direction of copper colors on roller cam cores and the light bulb went on!

The copper is applied before heat treat then goes thru a chemical bath to remove the copper. They aren't really played just dipped in a copper solution to protect the surface from damage during the procedure.

I used to haul lots of GM engine parts to a heat treat facility in Lansing, MI and I saw some parts go thru with that copper hue.

Likely someone can research this but it's been discussed here a few years ago back when I was assembling parts for my engine deal.

BTW...that heat treat shop did the work for Lunatis crankshafts. I'd see a couple hundred cranks go into the oven everytime I was there. A free extra crank may have altered my Mopar alliance....

Just kidding.