I replaced the 2005 Sony with a 32" Samsung flat screen. The front cherry wood facing boards were removed. I had the cherry stain originally used in the coach, so I built a new frame to fit the Samsung and stained and varnished it to match. I had some of the cherry wood, but had to order the top 6" board from Rockler.
There was about a 10 degree tilt, so I mounted a 2" by 8" board in the old cabinet and bolted the mounting frame to it. The Samsung fit in the old cabinet with 2" per side, 4" on the bottom and 6" on the top. The new cherry frame had 1/2" strips glued inside to hold the Samsung. I also used 3/8" automotive weatherstripping next to the wood strips. When the cherry frame was placed against the Samsung, the black rubber holds it in place. It seems very solid.
I also installed a Winegard HD Trav'ler dish for DirecTV and connected the HDMI output to the Samsung.