Again Toyota probably doesn't want a repeat of what happened in the 90s when Japan's economic bubble popped. We aren't exactly in a great economic environment with all that's going on. Japan's yen is weak not like investments are poring into the country. Why risk it on a niche vehicle.
I would recommend OP get it looked at first. Such a blanket statement. Lots of people here have a80 style wing that basically garage queens it. Other than it being higher in miles. What else says it looks like a beat to shit ricer.
Roughly 10k. I do oil changes once at the start of spring and once at the end of fall. Interior spells like new. Had to get a new hood though cause some idiot thought he could bunny hop over it with his bike.
I can only speak to the bm3 wifi dongle. But it states on their site it uses less power when not in use so it doesn't trip the alarm. But others continue to use x amount of voltage which causes the alarm to go off.