Then yes, I would defintely feel comfortable using copper coat. I prefer the spray kind for head gaskets.
It's kind of funny, the man I worked for learning the mechanic trade 44 years ago prefered copper coat. Not many things stand the test of time.
He also prefered Champion spark plugs. He used to tell me "AC builds plugs for GM, Autolite for Ford, & Champion makes plugs for the rest of the world."
He liked to use what was then called "Shalers' Rislone" for engines with noisy lifters. It usually worked, too.
I think the most important thing he ever told me, and something that has served me well, was " An engine doesn't know whose name is on it, or how many cylinders it has. It will run if it has fuel,air,compression, & a spark at the right time."
So far I've worked on everything from singles all the way to a Jag V-12.
Strange how one little thing can trigger those old memories.