$1500 with our without tires? There are a lot of wheel sites. Make sure you get the right offset, 15mm to 22mm (preferrably 18mm), and bolt pattern 5x115 (not 5x114.3)
Once you see some rims you like you could post pics here and someone may know something about them.
Here are a few sites to get you started.
20 inch custom rims for Chrysler 300 RWD - WHEELSMASTER
BigWheels.Net: custom wheels,chrome wheels,alloy wheels,car wheels,truck wheels,aftermarket wheels,large rims,wheel and tire packages,polished wheels