Potential RS200 Owner

[Beams]

Hi guys. I'm looking at buying an RS200 import, just wondering what has to be done to ditch the Japanese head unit and nav systems in place of a normal head unit without leaving it looking like a dogs breakfast. Are there aftermarket panels and wiring harnesses available? There is also an array of buttons marked in Japanese  near the shifter which I would like to delete.

Also, they only run on 98ron or higher, yeah?

Thanks in advance!