This is truely a great car. I just sold my 1992 SC400 with 276k miles. I didn't even have to advertise, is was very easy to sell.
The high side power steering hose on this car is pretty expensive, but your can take the hose off of the car and look up a hose company in the phone book and take yours to them, the can replace the rubber section of your hose for a fraction of the cost of a dealer.
The power steering pumps on these cars are bad about leaking, but you can go to your dealer and buy a power steering pump reseal kit. So much cheaper that a complete pump. This is all that 99% of the cars need.
Also if you go to your local parts house, your can buy a plastic polish used for lenses, and it will work wonders on your headlights.