OK so I have looked at like every chart ever created and can not come up with a for sure heat range for a AC 41-932 the only thing I am sure of it is a double platnium. Can anyone tell me the heat range??

 

The only advantage to a platinum plug is that they don't wear out as fast. A regular copper plug will work just as well. Copper plugs should at least be checked every 2-3 years.

It looks like those plugs are considered a stock replacement plug so whatever heat range a stock plug is.