I'm considering getting a 100, or gx470 for my wife. What are the major mechanical issues to look for, and at what mileage? If it has a tow package, would it be able to pull my 77 on a flatbed? If not, what would be required to make it comfortable to do so. I'm not looking to off road the truck too much if at all, at least for the near future (I know what happens when you say, it's just a daily). Thank you all for your input.