Most car oriented displays seem to mostly use slot type mounting brackets- this is relativly easy to fabricate for- all you would need is a bolt and nitro affix the screen to mount.
I'm pretty confident in my abilities in most of the CarPC topics. My only question is how to affix the LCD to a custom bracket should I need to build one. Are they screwed on, glued on, etc? I've trolled as many forum threads as I can find on making custom brackets and no one ever covers actually attaching the display.