I was just curious where do you pros install this unit? there does not seem to be enough room behind the dash. oh by the way 2004 gmc envoy xuv also where would you place the antennas? I managed to install the z1, bt & pac swi-ps but am looking for some insight on this.

thanks in advance

My guess would be under a seat? Antennas can be mounted in the rear window, I believe.

That's the one where the back can be turned in a truck bed right? If thats the case, I'd put the tuner under the passenger seat. Then run the antennas in the upper corners of the windsheild. If you run them right, you'll berely notice them.