What about exhaust flanges on the head? Cut 'em or leave 'em as one piece? Mine are 1/2" hot rolled steel and won't hold gaskets. The old headers used normal header flanges. I cut those and they wouldn't seal either. Header leaks are a way of life for me.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
