I think the home page (FAQ?)has some info on 98.5 differences. Also I would get the PCM that goes with the engine you decide on.
You may have to get PATS keys reprogrammed to start engine.


98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both