Yea I tried to buy a new Durango RT from HC back in 2022. The only thing we asked to finalize the deal was to swap silver wheels with black wheels that was on the one next to it. That was a hard requirement from the wife. They wanted an additional $3k over their full price offer to SWAP the wheels. We wouldn't even get the originals with it. We ended up walking out.
They're a bit pricey, but City Diesel over in Decatur is top notch and could fix it no problem. Maybe even cheaper than you got quoted, not sure. There's another called TruTorque diesel over in Athens that I've also heard is really good with a Cummins.
Whatever you do, make sure that whomever does the repair is good with a Cummins and has references. There are some less than stellar diesel shops around this area. (I used to be an outside diesel rep for a local diesel dealer).
If you don't mind me asking, who is the local shop?