You love the OEM look, you have a double-DIN dash kit, and you are happy using your phone for maps via the AV input.
This is the modern, preferred method for those who want to keep the stock look but gain English functionality. Specialized companies (often found in New Zealand, Australia, and the UK) have developed hardware and software patches that allow the unit to interface with your smartphone.
If you are handy with a screwdriver, the DIY overlay route is a satisfying weekend project. If you have $500 to burn, rip the whole thing out and put in a modern Sony or Kenwood DMX series.
Look for or any option ending in the character 語 .