Porting DC Stage IV iron heads

I’m right with you. I probably turn down 2-3 porting jobs monthly because of them being cast iron.
Jerry Killian ported this last slant 6 head I have. He said the ONLY reason he did it was because he had ported one for me before, plus he agreed a long time ago to do another one. He said after this one, he was not porting anymore iron heads again. Ever. LOL