I know the actual unit is 9.9"W and 9"T....but how wide and tall is the actual stuff inside the case...the screen, touchscreen, all of that?

The space I have in my dash is about 1/2 an inch wider then the size of the actual viewable screen size for a 10.4" Which is 9x7" (Viewable Screen Size of 8"x6", AKA 4:3)