I’m trying to figure out where the best placement of a radio would be in the dash of my ‘66. I have a ton of holes in my dash, not sure what all is factory and what is ‘custom’ from PO’s. Aside from getting a new headlight switch, installing a radio, and putting in the Vintage Air AC controls, I’d like to fill in the rest of the holes and smooth it out. What have you all done to clean up your dash?