Hi Blade,
I'm new here too, and live in Auckland. I've owned a '97 Stagea since 2000 (one of the first in NZ) and have just imported an M35, a 2006 RX250 FOUR (non-turbo) to replace it with. The digital TV mod the Aussies do, isn't suitable for NZ as our terrestrial digital TV system is completely different to theirs, using MP4/h.264 video and AAC/AC3 audio. I don't know of any 12V tuners available yet, and if there were any, I believe they would need to be configured to output NTSC video in order to work with the onboard screen. It's possible one of those HDD media players could be an option, so I maybe looking into that. Awesome car though, and also looking forward to the nav conversion too, although the mod for the 2005-2007 models isn't ready yet.