J13

I have recently purchased a 2006 Toyota Corolla Ascent hatch, and what I was wondering recently was whether it is possible to get a MPH/KPH replacement face plate for the speedometer. Being Australian-bought it's obviously in Km/H, but I want to replace it with a plate that has both - MPH inside, KPH outside. It wouldn't have mechanical ramifications, just a replacement of the faceplate. Any ideas?