Turbo or NA?

Mileage?

The rear suspension might need to be rebushed soon. The transmission, if it is an AW-70/71, might need a tailshaft bushing and/or a new valve body. Motor and tranny mounts go at about this age. If the radiator hasn't been replaced, that should be on your checklist as well, along with the heater hoses and heater control valve. You could be in for some exhaust work, although the stock cat-back exhaust is usually swiss cheese after about 10 years so maybe that's already been done by the previous owner.

I would start with a general tune-up....new rotor, cap, wires, plugs, air and filter filters. Replace the flame trap and clean the plumbing. Look for vacuum leaks at the intake and replace hoses where necessary. Clean the throttle body. If the timing belt is due soon, don't forget to replace the tensioner along with the cam, intermediate and crank seals on the front of the engine. Check the valve lash.

Rust is your biggest enemy. If the body is basically rust-free, everything else is repairable.

Take any car that you are considering to a garage for inspection. With shop rates being what they are today, you will probably spend $120+ but it is well worth the expense IMHO. Get a compression test and leak down test to check for excessive blow-by. Low compression on one cylinder, or low compression across all four that improves when oil is squirted into the cylinders, are signs of pending head gasket failure and worn rings, respectively. You shouldn't have either of those issues on a car that has done 150-175K miles. Basically this will tell you how well the car has been maintained.