Can't say for sure about OKC, but if you ever make it to Tulsa we have a few options. A-1 Chrysler is yard that specializes just in Mopar stuff. This is one of the few yards that I've ever seen with TJ's and JK's. I've seen plenty of WJ's out there too.
LKQ is a self service yard that is known nationally. Look on their website to find a loc in or near OKC. I've had real good luck with their yard in Tulsa for my XJ.
2005 Bright Silver Metallic X- Stolen on May 14, 2012
1988 MJ 2x4- AX15/4.0 ~ 318K miles and going
2006 GTO M6