Well, after further consideration I think am stuck just epoxying the metra kit and the lcd bezel right into the dash. I will then FB resin the areas with gaps in them. I masking taped the rest off and already started the glue process. What I think I am going to do is still build an Indash pc using another metra kit but just grinding that one down to the point where it can lay flush against my new built-in lcd in the dash. I think this is the only way I can do it. If anyone has any other suggestions please let me know. Here are two pics of the dash taped off and then one with the metra kit epoxyed into the dash. After that I will then expoxy the LCD bezel inside the metra kit.