I want to put a tach in the instrument panel in my '64 Nova Wagon. The problem that I'm having is that I need to order a tach, and to order it, I need to know what size the hole in the instrument panel is that the tack is going to mounted in. The tach is going to be installed in place of the clock, so it's the center hole in the dash that I need to find the diameter of the hole. So far, I haven't been able to find anyone who knows what size that darn hole is. Anybody out there have a '64 Nova instrument panel sitting around that you can measure?
