hey guys i'm looking at buying an extended cab truck and i'm wanting to put an overhead dvd player and screen in the back for my daughter. i have no idea how to mount it to the roof. i'm good with the wiring and everything like that but the actual mount to the ceiling i have no idea how they actually mount. any advice or someone thats put on in could help me would be great. its possibly going in a 1993 x cab silverado.