My coach has a 27" CRT TV above the dash, sitting is a cabinet.If I purchase a 28" HDTV, it will fit inside the cabinet, with room to spare. If I purchase a 32" HDTV, it will fit flush on the outside,...
I replaced our tv with a Samsung LED. I removed the vertical rails in the cabinet and built a plywood frame (about 4" deep)which slid into the opening. The frame had a plywood front that I then mounted the tv to. I can send pics if you want to PM me.