94' tt supra mileage!!!

im new to this forum and i was hoping someone here can give me some advice, im about to purchase a 94' tt supra(auto) with alot of miles on it, its 10 years old, you can do the math, lol, and i was just wondering what things should i be looking into replacing or rebuilding, i just wana make sure the car is gona be ruuning good and stop any problems b4 they happen,help me!!!