In the UK, many owners of Japanese cars are afflicted by huge front bumper 'bricks' for mounting standard length number plates on. If the car was designed without a 'brick', its never going to look good with one! This can be easily rectified by 'de-bricking' or removing the plate mount.
If you are going to do this modification, make sure you have the replacement plate first! Obvious, I know, but in all the excitement... The new plate is going to have to be a double-line style similar to those fitted on offroaders. Dimension details can be found below. You will also need a Phillips screwdriver and mounting screws or pads (if not provided with your new plate).
UK Number plates must conform to specific regulations. If your plates do not conform, you may be stopped by police and penalised. An outline of the guidelines can be seen here. If outside the UK, you would be advised to check the regulations in your own country.
First, remove the existing plate. It will either be screw mounted or held by sticky pads.
You are presented with two bolt screws. Unscrew them and remove the 'brick'.
Remove the two screw clips and clean all the surrounding paintwork with the relevant T-Cut. You may find that the 'brick' has permanently scored the paintwork. Don't worry too much. It still looks better than with the 'brick'!
Finally, fit your new plate. My plate is 310mm x 160mm. It has to be less than 320mm wide to fit the mount. The height is entirely up to you, however, bear in mind that to meet UK regulations, they must be about 200mm. That's all I'm saying.
A good place to buy a custom number plate is Fancyplates. You can order online and receive the plate, including mounting screws and pads, within a few days.