Can I still get original steel head gaskets for 350?

 

If not, then I saw a video from BTR performance where Bill Trovano uses reproduction head gaskets that are almost as thin as the original ones - they're for sale on BTR's site.

Originals might be found second hand, but they're no longer made to my knowledge.

 

I believe Bill uses Cometic MLS (multi layer steel) gaskets that are probably almost that thin. They are about $100 a pop tho.