"Also, to the right of the dash light dimming wheel, there is a space. In the Australian BRZ and international 86, this is a headlight angle wheel. Not sure why the Australian 86 has opted out." It's because you can go from the UK to Europe by car and they drive on opposite sides of the road. If you drive on the left, the headlights are biased to the left and vice versa. It's quite common to have to buy new headlights before registering a European car in the UK.