metal head gasket question

[Butterglry@aol.com]

In a message dated 11/6/2002 12:01:58 PM Eastern Standard Time,
Joe.Stewart@cox.com writes:

> Yes. I've never known anyone that could get a copper gasket to seal on a
> street car. O rings usually don't help that much. I'm not sure if the
> original post was about a copper gasket, though.

are all "metal" head gaskets copper? so a copper gasket isnt streetable?
whats the limitations of a stock det headgasket? i personally know people
running upwards of 26 psi on theirs but how safe is that, aside from 26 psi
that is!
thanks
shawn
built det w/stock t25