Paints a funny thing. Does nice new shiny paint show a well looked after car, or does it hide an old problem or issue!? Drive the car, feel if the gearbox is still toyt like a toyger and if there's any play in the steering etc etc...
Buying a used car especially cars like these are a huge gamble. I usually take someone else who's keen on car's with me. I'm an Ag mechanic so I know a certain amount, but its always good to have someone else there just incase I'm either being a perfectionist or a numpty.