The install instructions are pretty good, they are at http://www.mopar-accessories.com/en-...=3362&pc=68940
I had the dealer install mine and the Sirius still worked for me, but I hear you can call Sirius and give them the codes off the radio and they can swap the trial, but it depends on who you talk to and what kind of mood they are in that day.
You will need the microphone mirror and the harness if you don't already have that, but the antenna is the same as you already have if you have the sirius. It is a dual antenna. If you have the handsfree already then you have to disconnect the uconnect module under the dash and bypass it. There are instructions for the swap here http://www.mopar-accessories.com/en-...ubGroupId=4013
Here is my post on my adventure http://www.ramforumz.com/showthread.php?t=98909
you can do the install in 20 minutes and it is easy to do.
Hope all the links made it through.