replacement parts

I'm a proud new owner of an 05 Magnum. love my car! I am having problems however finding parts so if anyone knows were I can find control knobs I could use that knoledge lol. I have tried dealers, ebay, salvage yards and searched the net, no luck! if I can't find something soon guess I'll try to...

I was hit in the rear and i need to replace the hatch and the rear bumper. Anyone have any recommendations on where i can find the parts? I would like to upgrade the bumper to an SRT-8 bumper if possible... Any help would be appreciated.