Is the car from a lot or a private party? If a PP, then look into how long they have owned it and what they have done to maintain it. Be sure to check the tranny fluid on the dip stick too see if its been changed or is smelling burnt. The ATX can be troublesome if it hasnet been flushed or at least drained on a regular basis. If you go for it I would suggest slowly changing over to synthetic tranny fluid, there is a drain plug on the bottom of the tranny pan that allows you to drain about 4 qts at a time so I would recommend changing the 4qts out when you change the oil until you've done it enough to get the old fluid out. I would also suggest adding an ATX tranny cooler.
I say go for it if it checks out good. Cars are expensive and if your going to go Jap your not going to find much for under 4K with decent year/miles.