Replaced sold H2 with new SUT! Questions???

[jason427]

I just stole a new SUT and already started messing with it. Does XM radio come free for a while as a trial??? I seem to get all the stations.
Anyway, with my 03, I added a factory NAV out of an Escalade.
The SUT has everything I wanted, except NAV.
Is it easy to add the new Touchscreen style to an 05???
My 03 had satellite reception issues when adding the nav to it and I don't want to start this task unless its going to work as good as factory when Im done.
Thanks for any info?

Also, my 03 had exhaust when I bought it. What are the thoughts on aftermarket exhaust? Does it help out in any way other than sound? Same with air intakes? Have people tried them all and narrowed it down to any particular combination that works?

Thanks,
Ill try a search for the last questions.....
Jason