For those of you that are towing your wheeler with your Tundra. What kind of fuel mileage are you getting? Did you have any problems with the trans, over heating, slipping? I know I'll have to beef up the rear springs to handle to extra load. I'll be towing a 91 4door SAS'd 4Runner.

I'm looking at a used 2000 x-cab 4wd with 145k miles for $6900. Owner claims it to be in the great condition.

Thanks