More information is necessary. The more we know, the better we can help.
Are you planning to attach the LCD bezel to the dash bezel? What are the bezel materials?
How do you plan to support the LCD panel? In other words, is the bezel going to fit over a separately-supported LCD panel as trim, or are you thinking of building the entire panel into the bezel?
Other information helps, too: What kind of car is this for? What kind of LCD panel are you using? Can you include a picture of the area you want to install into?
Have you used and to find if anyone else has done this? What did you find?