$4K is a lot of money but this is a lot of car. Had a 90 turbo wagon that had 0ver 300K miles on it when I sold it. They can run for a long time regardless of what some folks say. Car also has the 4EAT transmission, which is great, and almost certainly has the rear LSD. In my experience an old radiator will cause more engine problems than just about anything else. Also this engine will have the generation lll cylinder heads which means less likely to crack.
If I was in the market for another wagon, I would seriously consider this cream puff.