While your dumping money into that pos here are some common things that break on them...

-Strut towers, it has a bearing in it which goes bad.
-Valve cover seals, look on the back of the block for grime all over it.
-Distributor O-ring, look for grime.
-Anti-sway bar bushings (mostly rear ones), look for a clunk sound in the suspension.
-Axle boots, look for cracks on them.

That is the most common ones I can think of.