Hi.
For 5 to 6 k you'll get a good solid car that needs very little work done on it I reckon.
A 4x4 hs a sligtly stronger engine block. 4x4 200 block 2wd 205.
A rwd drive train is stonger that a 4x4 one as after 350bhp a 4x4 starts to worry a bit lol.
Rust is the usual thing to look out for around the sills and rear arches mainly.
As long as things are checked regularly and not modified by an idiot or using tacky mods they will be a good car to own.
What ever you do, dont rush into buying a cossie. Look at as many as you can. Theres me who bought the first one I saw lol

I'm sure others will point you out some other facts.