Here's a write up on one I did. I just replaced the pan with a Dorman version, which has a drain plug. In my case I used an adapter to install the sensor into the pan. It has worked perfectly for me. The part numbers are in here:
Until you have that gauge working, you have no idea how well it works or doesn't. That and the sender goes in the pan.
You may have to notch the fins a bit to have some clearance on the inside of the grill.
I was a quality engineer at a company that manufactured AC lines, it was a shitty company and we had all sorts of problems with braze rings while I was there. If we were able to find these defects I'm amazed they made it to your shop. Is that a mopar part?
Well I know to avoid their stuff now lol. That's a braze ring that didn't break down, happens all the time but a decent quality program would catch it. If the torches on the braze machine aren't set perfectly you'll have those kinds of issues
Definitely looks like the cooler you have is on the large size. I'd probably get a different cooler, or, if that's not an option, see if there's a place on the frame you could use. FWIW, this is why I used the B&M 70264. It was the largest I could fit and still run the 16" PSC cooler in the grill.
