From what I have found Out and understand so far is that Epoxy or Jb weld has been used on them heads. I have not come across any bolt ins for them or have i heard of this.If I had a bad head of either I'd be happy to start digging into that as well. To see why? But their is the aftermarket which i'm sure is far better. Only my helping 2cents on this one Because I know Very Little about them Heads. But not afraid to learn anything.That maybe Helpful to pass along
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God doesn't like ugly.
