"However, any brinelling that actually takes place offers a slightly better combustion seal... similar to o-ringing the head or block when using a plain flat copper head gasket"

Thank you very much for that tip, I had no clue.

" is pre flattened copper available for mopars?" was the question.

Sorry if I beat around the bush.

Of course pre-flattened steel (various) is available for most all makes, I've used them and seen them eat the cylinder heads slightly......
however pre flattened copper is not sold for Chrysler products, is it? (asking because I can't find it).

If pre flattened copper/composite was available for Mopars, I would try it.

I've already spent the money on cometic, installed them and fired the engine.
But I am not convinced I really require that technology for a street engine, and if there are any future teardowns I'd like something a little more user friendly.