Install a backup assistance sensor kit

First time on Forum second attempt to post question, hope not duplicate message for first timer.
 
Just purchased 2007 Chrysler 300 RWD and would like to upgrade the bumper rear for backup capability. Need complete details with internet location for information if available. Thanks for the help!
 

I simply purchased the MoPar park assist kit at my dealers and had them install it on my Magnums SRT8.  Works great and looks OEM from the exterior (except for body color in the middle of the sensors on the bumper).  Interior wise, the lights and sounder piece is mounted on the passenger C pillar (instead of the light bar centerd in the headliner over the back seat), but works just as well, if not better.