Looking at 04 4runner v6 3.5l with really high mileage, 497k km(about 310k miles). All highway, one owner, dealer maintained. Clean no engine codes just vsc and tire pressure. Rear hatch doesn't open. Clean inside and out as used for a 200k a day commuting with only one person. What major things should I be aware of when going over it again? Axles ,trans, hidden rust areas. I have a 33ok km 3rd gen with no problems since I owned it. Any idea of value with this sort of mileage?