Yeah, don't fold the headliner!
Like was stated, both seats and steering wheel should be enough. Same thing I did on one of my Hondas.
Some might like the flat paints, like that "battleship" grey on that lambo; but I personally like metallics. I specifically LOVE LOVE LOVE metallic root beer brown on the 2IS :
Looking forward to some more pics AND vids of the GTR!