Oh gag me...OnStar...in a jeep...next thing you know Chrysler will be bought up by Chevy.
On your OP, just about anything can be installed, it is just a matter of how much it is worth to you to do it. Most likely if it is available they probably provide all the parts as a kit with instructions on how to install it.
Participate in life....Keep movin'....Go there....JK'n it.........Do it! Jeep #1: Red Rock 08 JK Rubicon 4dr, 6 sp manual, Stock Mud Tires, MyGIG Upgrade, Hard Top, after sale BestTop SunRider Soft Top, Congo Cage Rack, Mopar slush mats Jeep #2 Black 08 JK Rubicon 2dr, 6 sp manual, both tops, some chrome...uggg (my wife's jeep) Jeep #3 White 92 YJ (my son's jeep) A great quote from a good friend: "All hail click clack and master jk'n." Click and clack are my idols!