I have been planning on an across-the-dash gauge/switch/indicator panel that will reside on top of the dash and reach just less than half-way across.
I had been wondering how I was going to address the rounded ends and back-side; now I know = THANKS.
One thing I have planned is to make the front face in three removable panels = big truck style, such that I can easily access the back-side/inside for maintenance and additions.
Great write-up.