Hey Wiz, I can vouch for the snap switch. My creep switch was blowing fuses and Jason sent me a snap switch. It's been perfecto ever since. I have a pretty old fan too! I think I was #57...
Also, its good to own Ward FCS. Works great.

 

For what it's worth... I have the Ward's fans which do a great job, but I do notice the temp increase on my right leg in traffic and at slow speeds. Tells me the fans are helping!

Getting rid of the the 'cadillac' converter will help with radiant heat at lower speeds and in traffic.