Would stay away from the earlier cars if I were you.
Personally, I probably would not buy anything older that 2003.
Just search the subframe issues as well.
Also steer aware from any of the ULEV (Ultra Low Emission Vehicles) as well. You should not have many in you state, but you never know where cars come from.
Search ULEV and you should find info. I believe you can tell pretty easily from under the hood?