The cnc does the repetitious grunt work of making the ports the same....development is done by hand, requiring high levels of skill and experience/proper judgement. It all starts with someone's hand work being digitized.

Good luck to the OP with KG. Maybe Report back with flow sheet and pics if you can?
I've seen a few good running cars with their parts and decals on them, and there have been a few posts here about their work.