It's just a typo Challenger, Bill ment 2000 and NEWER. If you have a 99 get your name on the jig list and do it, it'll will just take about an hour of your time and it's real easy. All the info about the KDP is here
https://www.turbodieselregister.com/forums/showthread.php?threadid=35685
Glenn
https://www.turbodieselregister.com/forums/showthread.php?threadid=35685
Glenn