I'm reading this thread with interest, as I have a similar issue. I don't have a temperature gauge other than the stock one, so I don't know specifically what temperature it is running at. I tend to resist things that weren't available as stock to the car, but may get one. But since most here have the same dash gauge, it seems to run best at about 1/4 of the way over. Like Jazzhorns, when it gets into the 80's, like this past Sunday the needle presses over to the middle of the gauge or higher sometimes especially if I'm sitting in traffic. It's never full blown overheated. Went over to the garage last night, left something in the car I needed, and there was a decent size puddle of water on the garage floor. I have the stock 22" radiator and I don't know if it has been re-cored or not, but I believe so. I'm running the stock 190 thermostat. Just water and a bit of inhibitor. I have a fan shroud with a 8-blade fan. The guy I go to for the difficult stuff and knows his stuff when it comes to Mopar's, told me that I could add a core to this radiator without putting the bigger 26" one in which wouldn't fit anyway without making additional modifications. I may try the 180 Thermostat idea. It gets a little hot in South Eastern PA in the summer, but I know some of you guys deal with way more heat than I do. So I'm curious as to how you keep your birds cool. Cool meaning the literal definition of the word referring to temperature, not how it looks.