Best place to put Temp probe

I've done exactly that before, in my particular case with the Durango I couldn't. There's literally a wall right behind the port for the factory temp sender (front of "beer barrel") on that engine.
On the /6 in my truck there is what I think is a factory pipe plug a few inches away from the factory sending unit hole that could be used for an aftermarket gauge (which is how I'm gonna plumb that one in)