Speedmaster heads revisited.

Have you ever used that tubing trick on iron heads? Would it be worth the effort?

Be curious what John thinks about that.
my thought is…why?
For a ”class” type car you wouldn’t want to do it because rules wouldn’t allow it.
For any other type car, why would you throw the money/ porting, etc, etc at a limited iron head when you could buy an offset or non offset aluminum head that weighs way less, has more potential, and is cheaper to port and likely has cnc options as well.