Trick Flow small block heads

yellow rose said
THIS^^^^^^^^^^^. If the surface finish of the head AND block are not correct you will have issues. You can’t hardly get the surface too smooth for a Cometic (you can, but you have to work at it), and you can easily get the surface too smooth for the FelPro gasket.

I’ve seen the results from the surface being too smooth for the FelPro gasket. I should have taken pictures of what it looked like.

shop that does my stuff( they are very good Mopar shop) told me the surface finish isn't all that critical to run cometics
More room for error, so to speak on the mating surfaces than what you hear is required.
I say that because they are ultra picky regards attention to detail, so that statement i found a bit surprising