I have a '94 Plymouth Sundance that I am having problems with. I just replaced the plugs, wires, distributor cap, and thermostat. Well, since I have replaced all of this, I have noticed quite a bit of moisture coming out of the tailpipe. However, I haven't noticed any backfiring. Any ideas?

Absolutely perfect combustion yields nothing but co2 and water. Cars can't obtain this, but usually water out the tailpipe is just burning off condensation from air moisture. (or a bad head gasket.)

If it uses no more water than before, don't worry about it.