Back when I built the new dash I resisted cutting this opening as it seemed nearly impossible to mark the position as I couldn’t get behind the dash without removing it, and I needed it in place to mark it. I tackled it and got it pretty spot on today. Hol llocation measured by guess work and some ruler work too. Can you spot the small hole in the dash? Next up is the passenger side, which I think is not going to be so simple, as there is even less tolerance for error.