FYI there's an all-Mopar wrecking yard just west of you in Whitehall, MT - Freeman's
I believe that there is also a decent all-Mopar yard in Havre, but I don't have the name or co-ordinates at the moment.
Due north I can point you to a great yard near Medicine Hat, Alberta - Flatla Auto Wreckers. If it's a Mopar, it doesn't get crushed. Ever. And the owner is very fair to deal with.