I got the coil pack today and installed it and that did it. Running as well as it has in the 3 years or so that I've owned it. It does seem to be still leaking a little oil, as there was a little smoke after the test drive. Guess I'll be replacing a gasket soon.
Thank you for your help!
For the sake of those who may have a similar problem, a brief review:
Engine coolant was leaking and engine was overheating.
Ran the car hot too long and started running rough.
Replaced the water outlet housing - Corrected the coolant leak
Still running rough. Had engine light code checked. - Cylinder 4 Misfire.
replaced plugs (did not fix problem)
replaced wires (did not fix problem)
replaced coil pack - Bingo! Running smooth
Had I known how to troubleshoot the thing properly, I could have saved about $55.
Now on to my next problem - Blower not working...