If you need new Mac I can save you a little
I'm going to have to buy new headers eventually. I'm trying to put it off as long as possible, but my old BBKs are beer can thin now. I've already replaced one primary. I'm considering Mac ones, but I just have such unfond memories I've trying to get their old stuff to fit with a hammer.
Kurt
Id make it all slip fit connections, with nice band clamps.. I can give you pt#'s