I'd stay away from that kind of mileage.... Sure the engine's got Lots of life still left in it but the rest of the truck?????
Shot! 
You'd have to be prepared to spend money on it all the time on it because if the previous owner hasn't replaced it, it's almost Gone
Take a look at this Long Island NY guy called "morethantrucks(dot)com" EVERYTHING these guys have has a Buck-and-aHalf on it and up -
hehehe I don't know how they do it!
It took a while, but I finally found an '02 F350 with 14K on it (an HONEST 14K!!) The whole drivetrain looks new underneath. It's a work truck with crank-up windows but I'd trade that AnyDay for PS & cruise with 90K on it
Front Axles, Hub Bearings, and Ball alone joints are expensive repairs!