I ran my coaxial the same way as you did on your prior trucks, through the vent window to the inside of the door and back out the the wire loom for the window/ door lock to the interior under the dash. I have OCD on wiring and how it should look, whips off the mirrors looked good, but I couldn't stand the whistling noise, so i went back the mounting it on the tool box and running the coaxial through the dust plug under the rear seat on the drivers side and back to the front via way of the driver's side rocker panel.
Just my two cents.....