well, noone really does engine mods cause the FWD trans is kinda weak, and there's not really a stronger replacement(and i don't think anyone wants to drop $2000 on a stronger Jasper rebuilt one)...
i mod mine a little bit...
i already added aftermarket head unit/amp/speakers, an remote start/lock/trunk system(my conti came without a remote fob and a whole system was about the same price)
i have some mods planned for my 94 this summer
-SHO swaybars
-Console/bucket seats/floor shifter(its a bench w/ a column shifter now)
-cat back exhaust
-subs(to complete my system)
the conti isn't really a highly "modable", there's some aftermarket things we can use from the Taurus SHO, but alot of what's out there would not be appropriate on our cars(cowl hoods, ground effects, spoilers, A-pillar gauge pods, etc. etc.)