Do all A bodies have overheating problems?

I see what you are getting at....
When testing the thermostat in water, I was more interested in how large of an opening the high volume t-stat had, as compared to a normal one.
I understand what you are saying about misting the radiator, and driving in the rain.
So I'll put the high flow back in, and concentrate on the fan.
I'm running the stock ( I believe ) pulleys that came with the car when new. Haven't checked ratio's or exact sizes. Thanks....