extrude honing anyone?

Do to what?
Intake, exhaust?
Keep in mind, Extrudehone doesn't port the major restrictons, or parts that need the most attention, it ports everything.
The right way to do it is have a good porting person rough it out and
finish with Extrudehone.

yeah works great but you need to do your cutting and shaping first and use it to enlarge the finish porting. Or you get a larger object with the same casting issues. This would be a good idea to do to a 1 piece after surgery done to make a plenum and adding a 3.3 neck