Hi Bob, I was in the market last year for a wagon and wound up with a '94 and am delighted with it. I did pop for a Starmark and it has paid off.
First of all, 93's have the 104 engine, along with the bad engine wiring. which ever you get, check the wiring. If it has not been replaced, either have a warranty to cover it or get a price adjustment, because it will need to be replaced. Use the search section of this forum for the details. also make sure the trans. has been serviced properly. Other than that the differences are the body changes, mostly in the front. I also had no use for the 400. I came out of a diesel and the 320 has all the poop I need. You can only drive so fast in the cities. Good luck, Ed