Do a lot of measuring, and you may find new flat screen (hi def) tv's that will fit right in the old openings. That's what I did at first (myself) but when I decided to go bigger with the tv's - I had to find a place that could do wood work and make a new and larger opening and match the stain of the wood we have.
Dish uses 3 satellites (Direct 5) for all their content. So, we got rid of the in motion one on the roof (they can only tune in one satellite at a time) and got a new one made by Winegard called the Trav'ler -
Trav'ler and had it installed. Once you are parked, it will rise up and find all 3 satellites.
2006 Revolution LE 40E
2004 Jeep Rubicon Toad/Brake Buddy or
20' Toy Trailer/Quads 'n Dirt Bikes