What do you think of this plug?

Just seeing what I can change to get better performance/durability from the spark plugs :) They are Autolite 65's with the copper core. And not to long ago my tech instructor told me to trash the Autolites and get Champion because they were designed for Dodge. The whole thing started when he was making fun of a melted Autolite we found in a car haha.

Heres a picture, thanks for any advice.

View attachment 148567

I would go 1 step colder, and 1-2 jests leaner.

but what carb, what pv/vac reading at idle [in gear if auto]?
and what elevation?