Measurements of radio opening in dash for a 1967 Barracuda?

Hi all,

I'm trying to correct my butchered dash frame for the radio opening. Could someone please provide measurements of the radio opening in the metal dash frame? Basically, I'd like to know the measurements of the rectangular opening (I think it might be 4-1/4" wide but I don't know the height), the diameter of the knob holes and the distance apart of the knob holes (center to center). I've circled the area on the attached picture I got off the internet.

Thanks for any help!
Steve