Was able to get a an acrylic window press-fit into the display panel. Although after stubling across Erin H's build, since my window is shaped like my front grille of the car, I'm thinking of having a window CNC cut to reproduce the hexagon mesh of the grille, and then having that piece edge-lit with LEDs as well. Still working on getting the rear sub, front sub, and midbass speakers to blend better, but getting there!