Also it was a suggestion, not a requirement to have a clean running sixpack. If he opens them up and they haven’t been touched? Great! But lets say his engine wants more fuel in the outboards at WOT? He’s stuck with what he has or modifying his plates. Worst case scenario you drill it too big and now you’re looking for new plates. Again just a suggestion to save some frustration and time. Promax plates are a quality of life addition to any sixpack setup, street or strip.