copper header gaskets ?

I don't have any experience with copper manifold gaskets, but I knew a guy that put copper headgaskets on a T-bird SC. It kept them from blowing under lots of boost, but they had a tendancy to seep a little bit on occasion.
Brandon
 
Copper gaskets are good on an engine with a freshly decked block and freshly milled heads. Other combinations may seep coolant due to uneven deck & block surfaces.