The temps the OP listed are too hot in my book.

Like the one guy said, you can narrow it down to fan or radiator, make a note of what you are seeing.

I would add an aftermarket gauge for now just to see exactly what is going on.

Are you sure the radiator is clean inside and out? Mopars had tons of sand in them from the factory and that can build up after a long time or especially after a long high speed blast...don't ask me how I know