I have a locksmith who reprogrammed a used skreem, ignition, and fob to match my vehicle as well as recoding the Vin so it is all compatible. Programming was including a new sentry type key for 300. I purchased the used parts as a kit off of eBay for around 400.
After many different attempts With dealerships, locksmiths and research, this was an awesome turn of luck for me.
BEWARE - I had one locksmith fry my original by attempting to replace the chip in the skreem/immobilizer. The gentleman who helped me did not need to do anything like that .
You can reach him at the link below. He has successfully created keys for a few crossfires.
https://abellocksmith.com
thanks -
nichole