Lee,
The coil I purchased off ebay had a pointed metal pin coming out of the bottom where the spark plug wire should attach. I purchased a spark plug wire at Autozone that was close to the correct diameter. I trimmed the end and inserted it into the coil. If I was sophisticated and had a continuity tester, I'm sure that I would be able to test the connection. However, I will use more of the trial and error method.
I took your advice and used "seal all" to coat the cork float. I think I will apply one more coat to ensure that everything is sealed properly. I just ordered new points and a condenser off ebay. Have you had any luck locating aftermarket decals for your mower?
Sean