Here's the ones I use:
Art Coffer - Phone: 602-276-7377
Desert Valley - Phone: 623-780-8024
Hidden Valley - Phone: 602-252-2122
Hoctors - Phone: 602-268-0761
Apache Auto Wrecking - Phone: 480-982-3600 in Apache Junction
In my opinion Hidden Valley and Desert Valley, and sometimes Art Coffers are very high priced, but do have a large inventory of Mopar parts.
Hope this helps.
The best deal I have gotten recently was at a Pull-a-Part yard where you remove the parts yourself, I got lucky and found an almost un-touched 73 Dart and removed a ton of parts for cheap. The Dart was wrecked in the front looked like it ran into a telephone pole dead center and pushed everything back........
I drove all the way out to Hidden Valley auto parts (It is in Maricopa, about an hours drive from Apache Junction area) to buy a tail light lens from them but they would not sell me just the lens, they wanted to sell me the entire assembly (housing, lense and trim) for $300. I went to Pull-A-Part and got just the lens for $10.00.