this really seems like the way to go. I can dash mount a 7" screen in my ranger no problem. My only thing is still powering the setup. there has to be a decent DC-DC Power supply for these.
I wonder if something like this would work? i know its only 5 amps. 313080006 Seeed Technology Co., Ltd | Power Supplies - External/Internal (Off-Board) | DigiKey
but yes, it will work indeed. but, im actually looking into a different powering setup that utilizes a switched ignition source that always on.